Penthouse

Penthouse (pronounced pent-hous)

(1) An apartment or dwelling on the roof of a building, usually set back from the outer walls.

(2) Any specially designed apartment on an upper floor, especially the top floor, of a building.

(3) A structure on a roof for housing elevator machinery, a water tank etc.

(4) Any roof-like shelter or overhanging part.

(5) In real tennis, a corridor having a slanted roof and projecting from three walls of the court.

(6) As mechanical penthouse, a floor, usually directly under a flat-roof, used to house mechanical plant & equipment.

(7) A special-interest magazine, aimed at a mostly male audience and published in several editions by a variety of owners between 1965-2023.

1520–1530: Despite the appearance penthouse is not a portmanteau (pent + house) word.  Penthouse is an alteration (by folk etymology) of the Middle English pentis, pentiz & pendize (and other spellings), from the Old French apentiz & apentis (appendage, attached building), the construct being apent (past participle of apendre (to hang against)) + -iz (the French -is ) from the unattested Vulgar Latin –ātīcium (noun use of neuter of the unattested –ātīcius, the construct being the Latin -āt(us) (past participle suffix) + -īcius (the adjectival suffix)).  Old French picked up apentis from the Medieval Latin appendicium (from the Classical Latin appendo (to hang) & appendere (to hang from).  A less common alternative variant to describe a shed with a sloping roof projecting from a wall or the side of a building was pentice.  Penthouse is a noun & verb, penthousing is a verb and penthoused & penthouslike are adjective; the noun plural is penthouses.  The adjectives penthouseish & penthousesque are non-standard.

Penthouse magazine, December 1993.

First published in 1965, Penthouse magazine was one of many ventures (in many fields) which proved unwilling or unable to adapt to the changes wrought by the internet and the atomization of the delivery of content; its last print edition (after a few stuttering years) appeared in 2023 although there must remain some perception of value in the name because of the decades-long prominence of the title and it's not impossible there will be a revival, even if it's unlikely to re-appear in the glossy magazine format of old.  In Australia, for students of the print industry the comparison between the “men’s magazines” Penthouse and Playboy (first published in 1953, on-line since 2020 and a print “annual edition” appeared in 2025) was something like that between the “women’s magazines” Cosmopolitan (since 1965 in its current niche) and Cleo (1972-2016) in that the two pairings were superficially similar but different in emphasis.  Not too much should be made of that because although identifiably there were “Cosmo women” & “Cleo women” (presumably with some overlap at the margins), between Penthouse and Playboy there were probably more similarities than variations.  Structuralists explained the difference between the two genres: “men’s magazines” were bought by men so they could look at pictures of women not wearing clothes while “women’s magazines” were bought by women so they could look at pictures of women wearing clothes.

View from the penthouse in which Lindsay Lohan lived in 2014, W Residences, Manhattan, New York City.

When the lovely Ms Schiffer appeared on the cover of the December 1993 edition of Penthouse, the editors may not have been aware of the beast which was coming to consume them but it was in April 1993 CERN (in 1953 the Conseil Européen pour la Recherche Nucléaire (European Council for Nuclear Research) but the following year re-named Organisation européenne pour la recherche nucléaire (European Organization for Nuclear Research) with the acronym retained because it was both more mnemonic and pronounceable than OERN) released into the public domain details of technology which would allow the free development of applications using the www (world wide web) which ran atop the internet, making indexed content more easily accessible and distributable.  When in April 1993 the NCSA (National Center for Supercomputing Applications) released version 1.0 of its Mosaic web browser, it triggered a social and industrial revolution which (variously on TikTok, X (formerly known as Twitter), FoxNews and such) continues to unfold.  Mosaic wasn’t the first web browser but it was the first to gain a critical mass and the applications which superseded it claimed many victims including Penthouse magazine.

Iso, the Grifo and the Penthouse

1965 Iso Grifo Bizzarini A3/C, Le Mans, 1965.

One of the most admired of the trans-Atlantic hybrids of the post-war years (1945-1973) which combined elegant coachwork, (hopefully) high standards of craftsmanship and the effortless, low-cost power of large-displacement American V8 engines, the Iso Grifo was produced between 1965-1974 by the Italian manufacturer Iso Autoveicoli.  Styled by Bertone’s Giorgetto Giugiaro (b 1938) with engineering handled by the gifted Giotto Bizzarrini (1926-2023), the Grifo initially used a 327 cubic inch (5.3 litre) version of the small-block Chevrolet V8, coupled with the equally ubiquitous Borg-Warner (four & five speed) manual gearbox or robust General Motors (GM) Turbo-Hydramatic automatics.  Later, after some had been built with the big-block Chevrolet V8, GM began to insist on being paid up-front for hardware so Iso negotiated with the more accommodating Ford Motor Company (FoMoCo) and switched to 351 cubic inch (5.8 litre) versions of their 335 (Cleveland) engine.

1955 Iso Isetta.

Iso was already familiar with the mechanical configuration, production of their Rivolta coupe, equipped also with the Chevrolet 327, having begun in 1962.  The Rivolta, let alone the Grifo was quite a change of direction for Iso which until then had produced a variety of appliances, scooters & moto-cycles, it’s most famous product the Isetta, one of the generation of “bubble cars” which played such a part in putting Europeans back on (three or four) wheels during the re-construction of the early post-war years.  Surprisingly, despite the prominence of the Isetta name and the Italian association, barely a thousand were actually manufactured by Iso, the overwhelming majority produced in many countries by BMW and others to which a license was granted.  The bubble cars were a product of the economic circumstances of post-war Europe and the ones produced in England even used the single rear wheel which had been abandoned by Iso because of the inherent instability; UK taxation laws made three-wheelers significantly cheaper and only a motor-cycle license was required to drive one.  Powered by tiny two and four-stroke engines, their popularity waned as “real” cars such as the Fiat 500 (1955-1975) and later the BMC (British Motor Corporation) Mini (1959-2000) emerged; although costing little more than the bubble cars, they offered more space, performance and practicality.  By the early 1960s, the bubble cars were almost extinct but, as a tiny specialized niche, they never completely vanished and the Isetta is enjoying a twenty-first century revival as model urban transportation, including the option of (Greta Thunberg (b 2003) approved) electric propulsion.  Once dismissed as dated and even absurd, their bug-eyed look is now thought to have "retro-charm".

1968 Iso Rivolta.

The Rivolta was thus quite a jump up-market and, while the engine wasn't the bespoke thoroughbred found in a Ferrari or Aston-Martin, the rest of the specification justified the high price.  Unlike some of the British interpretations using American V8s, Iso insisted on modernity, the platform probably the best of the era with a body welded to a pressed-steel chassis, a combination which proved both light and stiff.  Just as importantly, given the high rate of corporate failure among those attracted to this potentially lucrative market, it was cost-effective to manufacture, reliable and easy to service.  Probably the feature which let it rank with the most accomplished of the era was the sophisticated de Dion rear suspension which, combined with four wheel disc brakes, lent it a rare competence (surprising some Maserati and Ferrari drivers, their cars with rear suspension designs dating from the horse & buggy era).  The de Dion design was not an independent arrangement but certainly behaved as if it was and, despite what Mercedes-Benz claimed of their beloved swing-axles, was superior to many of the independent setups on offer.  A noted benefit of the de Dion system is it ensures the rear wheels remain always parallel, quite an important feature in an axle which has to transmit to the road the high torque output of a big V8, a lesson Swiss constructor Peter Monteverdi (1934–1998) applied later in the decade when he went into production using even bigger engines.  Iso, with a solid base in accounting and production-line economics, ran an efficient and profitable operation not beset by the recurrent financial crises which afflicted so many and the elegant Rivolta was a success, remaining available until 1970.  Some eight hundred were sold.

1967 Iso Grifo Series One.

The Rivolta’s platform proved adaptable.  In 1965, Iso released the Grifo coupé which was more overtly oriented to outright performance and strictly a two-seater.  With lovely lines and a modified version of the Rivolta’s fine chassis, the Grifo was another product of the fertile imaginations of Giugiaro & Bizzarrini but, in something not untypical in Italian industry of the time, the relationship between the latter and Iso’s founder Renzo Rivolta (1908–1966) soon became strained and was sundered.  Bizzarrini would go on to do remarkable things and Iso’s engineers assumed complete control of the Grifo after the first few dozen had been completed.  Bizzarrini had pursued a twin-stream development, a competition version called the A3/C with a lower, lightweight aluminum body as well as the road-going A3/L and when he decamped, he took with him the A3/C, to be released also under his name while Iso devoted its attentions to the A3/L, again using engine-transmission combinations borrowed from the Chevrolet Corvette.

1964 Iso Grifo A3/L Spider prototype by Bertone.

The Grifo weighed a relatively svelte 1430 kg (3153 lbs) in what must have been a reasonably slippery shape because the reports at the time confirmed some 240 km/h (150 mph) was easily attained, an increase on that managed by the C2 Corvette (1962-1967 and which turned out to be not aerodynamically efficient as it looked) and, when configured with the taller gearing the factory offered, the factory claimed 260 km/h (162 mph), was possible.  A test in the UK in 1966 almost matched that with a verified 161 mph (259 km/h) recorded and two years later, the US publication Car & Driver 1968 tested a 327 Grifo but didn't to a top-speed run, instead estimating 157 mph (253 km/h) should be possible given enough road.  There were surprisingly few variations, fewer than two-dozen made with a targa-style removable roof panel and a single, achingly lovely roadster was displayed on Bertone's stand at the 1964 Geneva Motor Show; it remained a one-off although a couple of coupés privately have been converted.  What made the Bertone prototype special however was it was a companion to the original A3/L prototype coupé with which it shared a number of distinctive features including (1) a side exhaust rakishly snaking through the passenger side of the cowl and under the rocker panel trim with its an almost matte finish, (2) frontal styling with the then fashionable “twin-nostril” fascia and (3) angled vents in the rear fenders.  Although visually similar to the series production Grifos, almost every line on the pair of A3/L prototypes was in some subtle way different.

The one-off Iso Grifo Spider on Bertone's stand, 1964 Geneva Salon, 1964 (left) and as discovered in Rudi Klein's famous shed, Los Angeles, 2024 (right). 

Although well-known in the collector community for its large stocks of rusty and wrecked Porsches, Mercedes-Benz and other notable vehicles from the post-war years, the Californian “junkyard” belonging to Rudi Klein (1936-2001) attracted world-wide interest when details were published of the gems which had for decades been secreted in the site's large and secure shed.  Mr Klein was a German butcher who in the late 1950s emigrated to the US to work at his trade but quickly discovered a more enjoyable and lucrative living could be had dealing in damaged or wrecked European cars, sometimes selling the whole vehicles and sometimes the parts (“parting out” in junkyard parlance).  His Porsche Foreign Auto business had operated for some time before he received a C&D (cease & desist) letter from the German manufacturer’s US attorneys, the result being the name change in 1967 to Porche (sic) Foreign Auto.  Unlike many collectors, Mr Klein amassed his collection unobtrusively and, astonishingly to many, apparently with little interest in turning a profit on the rarest, despite some of them coming to be worth millions.  After Mr Klein died in 2001, his two sons preserved the collection untouched until, in October 2024,the auction house Sotheby’s began a series of rolling sales, one to go under the hammer the one-off Grifo spider.  At some point there was an accident which damaged the nose so a standard Grifo facia was installed and in this form Mr Klein ran it for a while as a road car before parking it in the shed among its illustrious companions.  Remarkably original except for the nose, it sold for US$1,875,000 and the expectation is it will be fully restored (including a fabricated replica of the original nose) before appearing on the show circuit.  In the decades to come, it will likely spend its time in collections with the occasional outings to auction houses.

1970 Iso Grifo Targa (left) Series Two and 1971 Iso Grifo Can-Am (454) Targa.  Only four Series II Can-Ams were built with the targa roof.

The bodywork was revised in 1970, subsequent cars listed as Series Two models.  The revisions included detail changes to the interior, improvements to the increasingly popular air-conditioning system and some alterations to the body structure, the hydraulics and electrical system, some necessitated by new regulatory requirements in Europe but required mostly in an attempt to remain compliant with the more onerous US legislation.  The most obvious change was to the nose, the headlamps now partially concealed by flaps which raised automatically when the lights were activated.  Presumably the smoother nose delivered improved aerodynamics but the factory made no specific claims, either about performance or the drag co-efficient (CD) number.

1972 Iso Lele & 1972 Iso Fidia.

In 1972, an unexpected change in the power-train was announced.  After almost a decade exclusively using Chevrolet engines, Iso issued a press release confirming that henceforth, the Series Two Grifo would be powered by Ford’s Boss 351 cubic inch (5.8 litre) 335 series (Cleveland) V8.  In the state of tune (close to that fellow Italian specialist De Tomaso were using in their mid-engined Pantera) chosen, the Ford engine was similar in size, weight to the small-block Chevrolet and delivered similar power and torque characteristics so the driving experience differed little although there were 22 high-performance Leles using a tuned 351, all with a ZF five-speed manual gearbox.  The other improvement in performance was presumably Iso’s balance sheet.  The switch had been made because internal policy changes at GM meant they were now insisting on being paid up-front for their product whereas Ford was still prepared to mail an invoice with a payment term.  The change extended to the other models in the range, the Lele coupé and Fidia saloon and while the Chevrolet/Ford split in the Lele was 125/157, the circumstances of the time meant that of the 192 Fidias made, only 35 were fitted with the 351.

1969 Iso Grifo 7 Litre (427).

One of the trends which made machines of the 1960s so memorable was a tendency never to do in moderation what could be done in excess.  In 1968, Iso announced the Grifo 7 Litre, built following the example of the US manufacturers who had with little more than a pencil and the back of an envelope worked out the economics of simple seven litre engines were more compelling than adding expensive components like overhead camshafts and fuel-injection to five litre engines; in the US, gas (petrol) was then relatively cheap and and assumed by most to be limitless.  Gas wasn’t as cheap in Italy or the rest of Europe but Iso’s target market for the Grifo was those who either could afford the running costs or (increasingly) paid their bills with OPM (other people’s money) so in those circles fuel consumption wasn’t something often considered or much discussed.  The new version used a 427 cubic inch (7.0 litre) version of the big-block Chevrolet V8, bigger and heavier than the 327 so the driving characteristics of the nose-heavy machine were changed but contemporary reports praised the competence of the chassis, the de Dion rear-end notably superior in behavior compared with the Corvette’s independent rear suspension although some did note it took skill (which meant often using some restraint) effectively to use the prodigious power.  Tellingly, the most receptive market for the Grifos, small and big-block, was the  FRG (Bundesrepublik Deutschland (Federal Republic of Germany; the old West Germany) 1949-1990) with its network of highways without the tiresome speed limits elsewhere imposed and (even in Italy), often enforced.  The Autobahn really was the Grifo's native environment.

1971 Iso Grifo Can Am (454).

Faster it certainly was although the factory’s claim of a top speed of 186 mph (a convenient 300 km/h) did seem optimistic to anyone with a slide-rule and there appears not to be any record of anyone verifying the number although one published test did claim to have seen well over 255 km/h (150 mph) with the Grifo still "strongly accelerating" before “running out of road”.  It had by then become a genuine problem.  Gone were the happy times when testers still did their work on public roads; increased traffic volumes by the late 1960s meant the often deserted stretches of highway (in 1956 an English journalist had taken a Mercedes-Benz 300SLR Coupé to 183 mph (294 km/h) on the autobahn) were now rare but whatever the terminal velocity, nobody seemed to suggest the 7 litre Grifo lacked power.  In 1970, after Iso’s stock of the by-then out-of-production triple carburetor 427 were exhausted, the big-block car was re-named Can-Am and equipped instead with a 454 cubic inch (7.5 litre) version, the name an allusion to the unlimited displacement Group 7 sports car racing series run in North America in which the big-block Chevrolets were long the dominant engine.

Despite the increased displacement, power actually dropped a little because the 454 was detuned a little to meet the then still modest anti-emission regulations.  Officially, the 454 was rated at 395 HP (gross horsepower) but the numbers in that era were often at best indicative: The Boss 429 Mustang was said to produce 375 HP whereas the 500 cubic inch (8.2 litre) V8 in the FWD! (front-wheel-drive) Cadillac Eldorado was rated at 400; a comparison of their performance belies the numbers and the difference is not all accounted for by the Eldorado's weight and power-sapping accessories.  As early as the the mid-1960s Detroit had begun understating the output of many of their high-performance engines and as politicians and insurance companies (for their own reasons) became interested, the trend continued.    

1971 Iso Grifo Can Am (454).

Unlike the 427 which breathed through three two barrel carburetors, the 454 was equipped with less intricate induction, a single four barrel and while with output (officially) dropping from 435 to 395 HP, performance was s little blunted although it's probable few owners often went fast enough to tell the difference.  What didn’t change between the 7 Litre and the Can Am was its most distinctive feature, the modification to the hood (bonnet) made to ensure the additional height of the 427's induction system could be accommodated.  The raised central section, the factory dubbed "the penthouse".

Penthouse on 1969 Iso Grifo 7 Litre (427).

Not everyone admired the stark simplicity, supposing, not unreasonably, Giugiaro might have done something more in sympathy with its surroundings.  Critics more stern would have preferred a curvaceous scoop, blister or bulge and thought the penthouse amateurish, an angular discordance bolted unhappily atop Giugiaro’s flowing lines  but for those brought up in the tradition of brutalist functionalism, it seemed an admirable tribute to what lay beneath.  The days of the big-block Grifo were however numbered.  In 1972, with Chevrolet no longer willing to extent credit and Ford’s big-block (429 & 460) engines re-tuned as low-emission (for the time) units suitable for pickup trucks and luxury cars, the Can-Am was retired.  So the small-block 351 Grifo became the sole model in the range but it too fell victim to changing times, production lasting not long beyond the first oil shock (triggered by the OAPEC (Organization of Arab Petroleum Exporting Countries) on 17 October 1973 imposing an embargo on crude oil exports to certain countries) which made gas suddenly not only much more expensive but sometimes also scarce and the whole ecosystem of the thirsty trans-Atlantic hybrids became threatened; in little more than a year, Iso was one of the many dinosaurs driven extinct.  Decades later, the survivors of the 414 sold are highly desirable; fine examples of the small-block Grifos attract over US$500,000, the few dozen penthouse have sold for close to a million and the rare early A3/Cs for even more.

From the lost, tactile days of buttons and toggle switches: 1966 Iso Grifo, one of 31 built in RHD (right hand drive).

Not fans of brutalist functionalism were the Lancia-loving types at Road & Track (R&T) magazine in the US.  Late in 1974, R&T published their 1975 buyer’s guide for imported and domestically-built smaller cars (R&T neither approving of nor understanding why anyone would wish to buy a big American car) and surprisingly, there were reviews of the Grifo, Lele and Fidia although the last of these sold in the US some two years earlier had been titled as 1973 models, the company having never sought to certification to continue sales although, given nothing had been done to modify them to meet the new safety regulations, that would likely have been pointless unless the strategy was to seek a "low volume" exemption, something improbable by 1975.

A tale of two penthouses: Paradoxically, as installed in the Grifo the induction system of the big-block Chevrolet V8 sat a little lower than that of the small-block Ford (a not unusual anomaly in the small-block vs big-block world) so the Ford-engined Grifos (right) used a taller penthouse than those fitted with the Chevrolet unit.     

The distributors had however indicated to the press all three would return to the US market in 1975, supplying publicity photographs which included a Series II "penthouse" Grifo.  A further complication was that during 1974, Ford had discontinued in the US production of the high-performance 351 (the "Cleveland" 335 series which was exiled to Australia) V8 so it wasn't clear what power-train would have been used.  Others had the same problem, De Tomaso (which withdrew from the US market in 1974) switching to use tuned versions of the Australian-built 351s but for Iso, the whole issue became irrelevant as the factory was closed late in 1974.  R&T's last thoughts on the penthouse appeared in the buyer's guide: "However, the clean lines of the original Grifo have been spoiled by that terrible looking outgrowth on the hood used for air cleaner clearance.  For US$28,500 (around US$155,000 in 2025 US$ although direct translation of value is difficult to calculate because of the influence of exchange rates and other variables), a better solution to this problem should have been found."

Demand

Demand (pronounced dih-mand (U) or dee–mahnd (non-U))

(1) To ask for with proper authority; claim as a right.

(2) To ask for peremptorily or urgently.

(3) To call for or require as just, proper, or necessary.

(4) In law, to lay formal claim to.

(5) In law, to summon, as to court.

(6) An urgent or pressing requirement.

(7) In economics, the desire to purchase, coupled (hopefully) with the power to do so.

(8) In economics, the quantity of goods that buyers will take at a particular price.

(9) A requisition; a legal claim.

(10) A question or inquiry (archaic).

1250-1300: From Middle English demaunden and Anglo-French demaunder, derived from the Medieval Latin dēmandāre (to demand, later to entrust) equivalent to dē + mandāre (to commission, order).  The Old French was demander and, like the English, meant “to request” whereas "to ask for as a right" emerged in the early fifteenth century from Anglo-French legal use.  As used in economic theory and political economy (correlating to supply), first attested from 1776 in the writings of Adam Smith.  The word demand as used by economists is a neutral term which references only the conjunction of (1) a consumer's desire to purchase goods or services and (2) hopefully the power to do so.  However, in general use, to say that someone is "demanding" something does carry a connotation of anger, aggression or impatience.  For this reason, during the 1970s, the language of those advocating the rights of women to secure safe, lawful abortion services changed from "abortion on demand" (ie the word used as an economist might) to "pro choice".  Technical fields (notably economics) coin derived forms as they're required (counterdemand, overdemand, predemand etc).  Demand is a noun & verb, demanding is a verb & adjective, demandable is an adjective, demanded is a verb and demander is a noun; the noun plural is demands.

Video on Demand (VoD)

Directed by Tiago Mesquita with a screenplay by Mark Morgan, Among the Shadows is a thriller which straddles the genres, elements of horror and the supernatural spliced in as required.  Although in production since 2015, with the shooting in London and Rome not completed until the next year, it wasn’t until 2018 when, at the European Film Market, held in conjunction with the Internationale Filmfestspiele Berli (Berlin International Film Festival), that Tombstone Distribution listed it, the distribution rights acquired by VMI, Momentum and Entertainment One, and VMI Worldwide.  In 2019, it was released progressively on DVD and video on demand (VoD), firstly in European markets, the UK release delayed until mid-2020.  In some markets, for reasons unknown, it was released with the title The Shadow Within.

Video on Demand (VoD) and streaming services are similar concepts in video content distribution but there are differences.  VoD is a system which permits users to view content at any time, these days mostly through a device connected to the internet across IP (Internet Protocol), the selection made from a catalog or library of available titles and despite some occasionally ambiguous messaging in the advertising, the content is held on centralized servers and users can choose directly to stream or download.  The VoD services is now often a sub-set of what a platform offers which includes content which may be rented, purchased or accessed through a subscription.

Streaming is a method of delivering media content in a continuous flow over IP and is very much the product of the fast connections of the twenty-first century.  Packets are transmitted in real-time which enables users to start watching or listening without waiting for an entire file (or file set) to download, the attraction actually being it obviates the need for local storage.  There’s obviously definitional and functional overlap and while VoD can involve streaming, not all streaming services are technically VoD and streaming can also be used for live events, real-time broadcasts, or continuous playback of media without specific on-demand access. By contrast, the core purpose of VoD is to provide access at any time and streaming is a delivery mechanism, VoD a broad concept and streaming a specific method of real-time delivery as suited to live events as stored content.

The Mercedes-Benz SSKL and the Demand Supercharger

Modern rendition of Mercedes-Benz SSLK in schematic, illustrating the drilled-out chassis rails.  The title is misleading because the four or five SSKLs built were all commissioned in 1931 (although it's possible one or more used a modified chassis which had been constructed in 1929).  All SSK chassis were built between 1928-1932 although the model remained in the factory's catalogue until 1933. 

The Mercedes-Benz SSKL was one of the last of the road cars which could win top-line grand prix races.  An evolution of the earlier S, SS and SSK, the SSKL (Super Sports Kurz (short) Leicht (light)) was notable for the extensive drilling of its chassis frame to the point where it was compared to Swiss cheese; reducing weight with no loss of strength.  The SSKs and SSKLs were famous also for the banshee howl from the engine when the supercharger was running; nothing like it would be heard until the wail of the BRM V16s twenty years later.  It was called a demand supercharger because, unlike some constantly-engaged forms of forced-induction, it ran only on-demand, in the upper gears, high in the rev-range, when the throttle was pushed wide-open.  Although it could safely be used for barely a minute at a time, when running, engine power jumped from 240-odd horsepower (HP) to over 300.  The number of SSKLs built has been debated and the factory's records are incomplete because (1) like many competition departments, it produced and modified machines "as required" and wasn't much concerned about documenting the changes and (2) many archives were lost as a result of bomb damage during World War II (1939-1945); most historians suggest there were four or five SSKLs, all completed (or modified from earlier builds) in 1931.  The SSK had enjoyed great success in competition but even in its heyday was in some ways antiquated and although powerful, was very heavy, thus the expedient of the chassis-drilling intended to make it competitive for another season.  Lighter (which didn't solve but at least to a degree ameliorated the brake & tyre wear) and easier to handle than the SSK (although the higher speed brought its own problems, notably in braking), the SSKL enjoyed a long Indian summer and even on tighter circuits where its bulk meant it could be out-manoeuvred, sometimes it still prevailed by virtue of durability and sheer power.

Rudolf Caracciola (1901–1959) and SSKL in the wet, German Grand Prix, Nürburgring, 19 July, 1931.  Alfred Neubauer (1891–1980; racing manager of the Mercedes-Benz competition department 1926-1955) maintained Caracciola "...never really learned to drive but just felt it, the talent coming to him instinctively."    

Sometimes too it got lucky.  When the field assembled in 1931 for the Fünfter Großer Preis von Deutschland (fifth German Grand Prix) at the Nürburgring, even the factory acknowledged that at 1600 kg (3525 lb), the SSKLs, whatever their advantage in horsepower, stood little chance against the nimble Italian and French machines which weighed-in at some 200 KG (440 lb) less.  However, on the day there was heavy rain with most of race conducted on a soaked track and the twitchy Alfa Romeos, Maseratis and the especially skittery Bugattis proved less suited to the slippery surface than the truck-like but stable SSKL, the lead built up in the rain enough to secure victory even though the margin narrowed as the surface dried and a visible racing-line emerged.  Time and the competition had definitely caught up by 1932 however and it was no longer possible further to lighten the chassis or increase power so aerodynamics specialist Baron Reinhard von Koenig-Fachsenfeld (1899-1992) was called upon to design a streamlined body, the lines influenced both by his World War I (1914-1918 and then usually called the "World War") aeronautical experience and the "streamlined" racing cars which had been seen in the previous decade.  At the time, the country greatly was affected by economic depression which spread around the world after the 1929 Wall Street crash, compelling Mercedes-Benz to suspend the operations of its competitions department so the one-off "streamliner" was a private effort (though with some tacit factory assistance) financed by the driver (who borrowed some of the money from his mechanic!).

The streamlined SSKL crosses the finish line, Avus, 1932.

The driver was Manfred von Brauchitsch (1905-2003), nephew of Major General (later Generalfeldmarschall (Field Marshal)) Walther von Brauchitsch (1881–1948; Oberbefehlshaber (Commander-in-Chief) of OKH (Oberkommando des Heeres (the German army's high command) 1938-1941).  An imposing but ineffectual head of the army, Uncle Walther also borrowed money although rather more than loaned by his nephew's mechanic, the field marshal's funds coming from the state exchequer, "advanced" to him by Adolf Hitler (1889-1945; Führer (leader) and German head of government 1933-1945 & head of state 1934-1945).  Quickly Hitler learned the easy way of keeping his mostly aristocratic generals compliant was to loan them money, give them promotions, adorn them with medals and grant them estates in the lands he'd stolen during his many invasions.  His "loans" proved good investments.  Beyond his exploits on the circuits, Manfred von Brauchitsch's other footnote in the history of the Third Reich (1933-1945) is the letter sent on April Fools' Day 1936 to Uncle Walther (apparently as a courtesy between gentlemen) by Baldur von Schirach (1907-1974; head of the Hitlerjugend (Hitler Youth) 1931-1940 & Gauleiter (district party leader) and Reichsstatthalter (Governor) of Vienna 1940-1945) claiming he given a "horse whipping" to the general's nephew because a remark the racing driver was alleged to have made about Frau von Schirach (the daughter of Hitler's court photographer!).  It does seem von Schirach did just that though it wasn't quite the honorable combat he'd claimed: in the usual Nazi manner he'd arrived at von Brauchitsch's apartment in the company of several thugs and, thus assisted, swung his leather whip.  Von Brauchitsch denied ever making the remarks.  Unlike the German treasury, the mechanic got his money back and that loan proved a good investment, coaxing from the SSKL a victory in its final fling.  Crafted in aluminum by Vetter in Cannstatt, the body was mounted on von Brauchitsch's race-car and proved its worth at the at the Avusrennen (Avus race) in May 1932; with drag reduced by a quarter, the top speed increased by some 12 mph (20 km/h) and the SSKL won its last major trophy on the unique circuit which rewarded straight-line speed like no other.  It was the last of the breed; subsequent grand prix cars would be pure racing machines with none of the compromises demanded for road-use.

Evolution of the front-engined Mercedes-Benz grand prix car, 1928-1954

1928 Mercedes-Benz SS.

As road cars, the Mercedes-Benz W06  S (1927-1928) & SS (1928-1930) borrowed unchanged what had long been the the standard German approach in many fields (foreign policy, military strategy, diplomacy, philosophy etc): robust engineering and brute force; sometimes this combination worked well, sometimes not.  Eschewing refinements in chassis engineering or body construction as practiced by the Italians or French, what the S & SS did was achieved mostly with power and the reliability for which German machinery was already renowned.  Although in tighter conditions often out-manoeuvred, on the faster circuits both were competitive and the toughness of their construction meant, especially on the rough surfaces then found on many road courses, they would outlast the nimble but fragile opposition.

1929 Mercedes-Benz SSK.

By the late 1920s it was obvious an easier path to higher performance than increasing power was to reduce the SS's (Super Sport) size and weight.  The former easily was achieved by reducing the wheelbase, creating a two-seat sports car still suitable for road and track, tighter dimensions and less bulk also reducing fuel consumption and tyre wear, both of which had plagued the big, supercharged cars.  Some engine tuning and the use of lighter body components achieved the objectives and the SSK was in its era a trophy winner in sports car events and on the grand prix circuits.  Confusingly, the "K" element in the name stood for kurz (short) and not kompressor (supercharger) as was applied to some other models although all SSKs used a supercharged, 7.1 litre (433 cubic inch) straight-six. 

1931 Mercedes-Benz SSKL.

The French, British and Italian competition however also were improving their machinery and by late 1930, on the racetracks,  the SSK was becoming something of a relic although it remained most desirable as a road car, demand quelled only by a very high price in what suddenly was a challenging economic climate.  Without the funds to create anything new and with the big engine having reached the end of its development potential, physics made obvious to the engineers more speed could be attained only through a reduction in mass so not only were body components removed or lightened where possible but the chassis and sub-frames were drilled to the point where the whole apparatus was said to resemble "a Swiss cheese".  The process was time consuming but effective because, cutting the SSK's 1600 KG heft to the SSKL's more svelte 1445 (3185), combined with the 300-odd HP which could be enjoyed for about a minute with the supercharger engaged, produced a Grand Prix winner which was competitive for a season longer than any had expected and one also took victory in the 1931 Mille Miglia.  Although it appeared in the press as early a 1932, the "SSKL" designation is retrospective, the factory's extant records listing the machines either as "SSK" or "SSK, model 1931".  No more than five were built and none survive (rumors of a frame "somewhere in Argentina" apparently an urban myth) although some SSK's were at various times "drilled out" to emulate the look and the appeal remains, a replica cobbled together from real and fabricated parts sold at auction in 2007 for over US$2 million; this was when a million dollars was still a lot of money.  

1932 Mercedes-Benz SSKL (die Gurke).

The one-off bodywork (hand beaten from aircraft-grade sheet aluminum) was fabricated for a race held at Berlin's unique Automobil-Verkehrs- und Übungsstraße (Avus; the "Automobile traffic and training road") which featured two straights each some 6 miles (10 km) in length, thus the interest in increasing top speed and while never given an official designation by the factory, the crowds dubbed it die Gurke (the cucumber).  The streamlined SSKL won the race and was the first Mercedes-Benz grand prix car to be called a Silberpfeil (silver arrow), the name coined by radio commentator Paul Laven (1902-1979) who was broadcasting trackside for Südwestdeutsche Rundfunkdienst AG (Southwest German Broadcasting Service); he was struck by the unusual appearance although the designer had been inspired by an aircraft fuselage rather than arrows or the vegetable of popular imagination.  The moniker was more flattering than the nickname Weiße Elefanten (white elephant) applied to S & SS which was a reference to their bulk and not a use of the phrase in its usual figurative sense.  The figurative sense came from the Kingdom of Siam (modern-day Thailand) where elephants were beasts of burden, put to work hauling logs in forests or carting other heavy roads but the rare white (albino) elephant was a sacred animal which could not be put to work.  However, the owner was compelled to feed and care for the unproductive creature and the upkeep of an elephant was not cheap; they have large appetites.  According to legend, if some courtier displeased the king, he could expect the present of a white elephant.  A “white elephant” is thus an unwanted possession that though a financial burden, one is “stuck with” and the term is applied the many expensive projects governments around the world seem unable to resist commissioning.

Avus circuit.  Unique in the world, it was the two long straights which determined die Gurke's emphasis on top speed.  Even the gearing was raised (ie a numerically lower differential ratio) because lower engine speeds were valued more than low-speed acceleration which was needed only once a lap.

The size of the S & SS was exaggerated by the unrelieved expanses of white paint (Germany's designated racing color) although despite what is sometimes claimed, Ettore Bugatti’s (1881–1947) famous quip “fastest trucks in the world” was his back-handed compliment not to the German cars but to W. O. Bentley’s (1888–1971) eponymous racers which he judged brutish compared to his svelte machines.  Die Gurke ended up silver only because such had been the rush to complete the build in time for the race, there was time to apply the white paint so it raced in a raw aluminum skin.  Remarkably, in full-race configuration, die Gurke was driven to Avus on public roads, a practice which in many places was tolerated as late as the 1960s.  Its job at Avus done, die Gurke was re-purposed for high-speed tyre testing (its attributes (robust, heavy and fast) ideal for the purpose) before "disappearing" during World War II.  Whether it was broken up for parts or metal re-cycling, spirted away somewhere or destroyed in a bombing raid, nobody knows although it's not impossible conventional bodywork at some point replaced the streamlined panels.  In 2019, Mercedes-Benz unveiled what it described as an "exact replica" of die Gurke, built on an original (1931) chassis.    

1934 Mercedes-Benz W25.

After building the replica Gurke, Mercedes-Benz for the first time subjected it to a wind-tunnel test, finding (broadly in line with expectations) its c_d (coefficient of drag) improved by about a third, recording 0.616 against a standard SSK's 0.914.  By comparison, the purpose-built W25 from 1934 delivered a 0.614 showing how effective Baron Koenig-Fachsenfeld's design had been although by today's standards, the numbers are not of shapes truly "slippery".  Although "pure" racing cars had for years existed, the W25 (Werknummer (works number) 25) was the one which set many elements is what would for a quarter-century in competition be the default template for most grand prix cars and its basic shape and configuration remains recognizable in the last front-engined car to win a Word Championship grand prix in 1960.  The W25 was made possible by generous funding from the new Nazi Party, "prestige projects" always of interest to the propaganda-minded party.  With budgets which dwarfed the competition, immediately the Mercedes-Benz and Auto Unions enjoyed success and the W25 won the newly inaugurated 1935 European Championship.  Ironically, the W25's most famous race was the 1935 German Grand Prix at the Nürburgring, won by the inspired Italian Tazio Nuvolari (1892–1953) in an out-dated and under-powered Alfa-Romeo P3, von Brauchitsch's powerful W25 shredding a rear tyre on the final lap.  However, the Auto Union's chassis design fundamentally was more farsighted; outstanding though the engine was, the W25's platform was, in many ways, eine bessere Gurke (a better cucumber) and because its limitations were inherent, the factory "sat out" most of the 1936 season to develop the W125.

1937 Mercedes-Benz W125.

Along with the dramatic, mid-engined,  V16 Auto Union Type C, the W125 was the most charismatic race car of the "golden age" of 1930s European circuit racing.  When tuned for use on the fastest circuits, the 5.7 litre (346 cubic inch) straight-eight generated over 640 HP and in grand prix racing that number would not be exceeded until the turbocharged engines (first seen in 1977) of the 1980s.  The W125 used a developed version of the W25's 3.4 (205) & 4.3 (262) straight-eights and the factory had assumed this soon would be out-performed by Auto Union's V16s but so successful did the big-bore eight prove the the Mercedes-Benz V16 project was aborted, meaning resources didn't need to be devoted to the body and chassis engineering which would have been required to accommodate the bigger, wider and heavier unit (something which is subsequent decades would doom a Maserati V12 and Porsche's Flat-16.  The W125 was the classic machine of the pre-war "big horsepower" era and if a car travelling at 100 mph (160 km/h) passed a W125 at standstill, the latter could accelerate and pass that car within a mile (1.6 km).

A W125 on the banked Nordschleife (northern ribbon (curve)) at Avus, 1937.  At Avus, the streamlined bodywork was fitted because a track which is 20 km (12 miles) in length but has only four curves puts an untypical premium on top-speed.  The banked turn was demolished in 1967 because increased traffic volumes meant an intersection was needed under the Funkturm (radio tower), tower and today only fragments of the original circuit remain although the lovely art deco race control tower still exists and was for a time used as restaurant.  Atop now sits a Mercedes-Benz three-pointed star rather than the swastika which flew in 1937. 

1938 Mercedes-Benz W154.

On the fastest circuits the streamlined versions of the W125s were geared to attain 330 km/h (205 mph) and 306 km/h (190 mph) often was attained in racing trim.  With streamlined bodywork, there was also the Rekordwagen built for straight-line speed record attempts and one set a mark of 432.7 km/h (268.9 mph), a public-road world speed record that stood until 2017.  Noting the speeds and aware the cars were already too fast for circuits which had been designed for, at most, velocities sometimes 100 km/h (50 mph) less, the governing body changed the rules, limiting the displacement for supercharged machines to 3.0 litres (183 cubic inch), imagining that would slow the pace.  Fast though the rule-makers were, the engineers were quicker still and it wasn't long before the V12 W154 was posting lap-times on a par with the W125 although they did knock a few km/h off the top speeds.  The rule change proved as ineffective in limiting speed as the earlier 750 KG formula which had spawned the W25 & W125.

1939 Mercedes-Benz W165.

An exquisite one-off, the factory built three W165s for the single purpose of contesting the 1939 Tripoli Grand Prix.  Remarkable as it may now sound, there used to be grand prix events in Libya, then a part of Italy's colonial empire.  Anguished at having for years watched the once dominant Alfa Romeos enjoy only the odd (though famous) victory as the German steamroller flattened all competition (something of a harbinger of the Wehrmacht's military successes in 1939-1940), the Italian authorities waited until the last moment before publishing the event's rules, stipulating the use of a voiturette (small car) with a maximum displacement of 1.5 litres  (92 cubic inch).  The rules were designed to suit the Alfa Romeo 158 (Alfetta) and Rome was confident the Germans would have no time to assemble such a machine.  However, knowing Adolf Hitler (1889-1945; Führer (leader) and German head of government 1933-1945 & head of state 1934-1945), still resenting what happened at the Nürburgring in 1935, would not be best pleased were his Axis partner (and vassal) Benito Mussolini (1883-1945; Duce (leader) & Prime-Minister of Italy 1922-1943) to enjoy even this small victory, the factory scrambled and conjured up the V8-powered (a first for Mercedes-Benz) W165, the trio delivering a "trademark 1-2-3" finish in Tripoli.  As a consolation, with Mercedes-Benz busy building inverted V12s for the Luftwaffe's Messerschmitts, Heinkels and such, an Alfa Romeo won the 1940 Tripoli Grand Prix which would prove the city's last.      

 

1954 Mercedes Benz W196R Strómlinienwagen (literally "streamlined car" but translated usually as "Streamliner".

A curious mix of old (drum brakes, straight-eight engine and swing axles) and new (a desmodromic valve train, fuel injection and aerodynamics developed in a wind-tunnel with the help of engineers then banned from being involved in aviation), the intricacies beneath the skin variously bemused or delighted those who later would come to be called nerds but it was the sensuous curves which attracted most publicity.  Strange though it appeared, it was within the rules and clearly helped deliver stunning speed although the pace did expose some early frailty in road-holding (engineers have since concluded the thing was a generation ahead of tyre technology).  It was one of the prettiest grand prix cars of the post war years and the shape (sometimes called "type Monza", a reference to the Italian circuit with long straights so suited to it) would later much appeal to pop-artist Andy Warhol (1928–1987) who used it in a number of prints.

1954 Mercedes-Benz W196R.  In an indication of how progress accelerated after 1960, compare this W196R with (1) the W25 of 20 years earlier and (2) any grand prix car from 1974, 20 years later. 

However, although pleasing to the eye, the W196R Strómlinienwagen was challenging even for expert drivers and it really was a machine which deserved a de Dion rear suspension rather than the swing axles (on road cars the factory was still building a handful with these as late as 1981 and their fudge of semi-trailing rear arms (the "swing axle when you're not having a swing axle") lasted even longer).  Of more immediate concern to the drivers than any sudden transition to oversteer was that the aluminium skin meant they couldn't see the front wheels so, from their location in the cockpit, it was difficult to judge the position of the extremities, vital in a sport where margins can be fractions of a inch.  After the cars in 1954 returned to Stuttgart having clouted empty oil drums (those and bails of hay was how circuity safety was then done) during an unsuccessful outing to the British Grand Prix at Silverstone, a conventional body quickly was crafted and although visually unremarkable, the drivers found it easier to manage and henceforth, the Strómlinienwagen appeared only at Monza.  There was in 1954-1955 no constructor's championship but had there been the W196R would in both years have won and it delivered two successive world driver's championships for Juan Manuel Fangio (1911–1995).  Because of rule changes, the three victories by the W196R Strómlinienwagen remain the only ones in the Formula One World Championship (since 1950) by a car with enveloping bodywork.