Aerodynamics is one of the rare places where physics and sculpture argue for the exact same shape. Long before wind tunnels were common, before computers could model airflow, engineers and coachbuilders were already chasing the teardrop — the one form that air moves through with the least resistance — and bending it, generation after generation, around an engine and four wheels. What follows is a loose visual timeline of that century-long pursuit: some of the results were genuine speed machines, some were rolling advertisements, and a few were built purely to prove a shape could exist. All of them are, in their own way, design at its most honest, form dictated almost entirely by function.

Start in 1914, with a car that looks like it escaped from an airfield rather than a workshop. The Alfa Romeo 40/60 HP Aerodinamica, better known as the “Siluro Ricotti” (Ricotti’s Torpedo), began life as an ordinary A.L.F.A. touring chassis before the coachbuilder Carrozzeria Castagna wrapped it in a riveted aluminum shell designed by Count Marco Ricotti, drawing directly on the aerodynamic thinking then emerging in early aviation. The result looked absurd next to its boxy, upright contemporaries — and it worked. Period accounts credit the car with reaching speeds well above 85 mph, extraordinary for the era, purely because its shape let air slip past instead of piling up against a flat radiator and open cockpit. It is, by most reckonings, the first car ever built with aerodynamics as the actual design brief rather than an afterthought.

Two decades later, the same instinct produced one of the strangest and most touching cars ever built: the Hispano-Suiza H6B Dubonnet Xenia of 1938. It was commissioned by André Dubonnet — French aviator, decorated World War I fighter pilot, race car driver, and heir to the Dubonnet aperitif fortune — and named after his wife Xenia Youriévitch, who died of tuberculosis before the car was finished. Dubonnet asked the coachbuilder Jacques Saoutchik to give a Hispano-Suiza chassis a body shaped by the same aeronautical logic he knew from cockpits: a smooth aluminum monocoque with no running boards, no exposed wheel arches, and a nose that curved forward like a fuselage rather than stopping abruptly at a flat grille. Only one was ever built. It survives today, restored, and in 2022 won the Bridge of Weir Design Award at the Hampton Court Palace Concours of Elegance — proof that grief, aviation, and engineering can occasionally produce something genuinely beautiful.

The Norman E. Timbs Buick Streamliner, built in 1948, took the same idea and ran it through a Southern California hot-rod sensibility instead of a European one. Timbs was an engineer, not a coachbuilder, and he built the entire car himself: a tubular chrome-moly chassis, fully independent suspension at all four corners, and a Buick straight-eight mounted amidships, all wrapped in hand-formed aluminum bodywork shaped like the land-speed-record streamliners then chasing records on the salt flats at Bonneville. Every line tapers backward toward that single dorsal fin. The car vanished from public view for decades, resurfaced heavily deteriorated, was painstakingly restored, and now regularly appears at concours events as one of the great homebuilt American automotive sculptures.

Not every streamlined shape here was built to actually go fast. The “Panthermobile”, better known as the Pink Panther car, appeared in 1969, built by custom-car designers Jay Ohrberg and Bob Reisner as a promotional vehicle for the animated Pink Panther Show. It has no roof pillars, no doors in the conventional sense, a bubble canopy, and a fiberglass body finished in the character’s signature shade of pink — a piece of pure show-car theater rather than an engineering exercise. But it borrows its language directly from the serious aerodynamic cars around it: the same low nose, the same unbroken curve from windshield to tail, the same visual promise of speed. It is a reminder that streamlined form had, by the late 1960s, become shorthand for the future itself, deployed as readily in marketing as in the wind tunnel.

By the late 1970s, the oil crises had turned aerodynamics from a novelty into a genuine survival strategy for automakers, and few programs pursued it as relentlessly as Ford’s Probe concept series. Between 1979 and 1985, under design chief Jack Telnack, Ford built five successive Probe concepts, each one chasing a lower drag coefficient than the last; the fourth in the series reportedly reached a remarkable Cd of roughly 0.15, a figure many modern production cars still can’t touch. It was unglamorous science — hours in the wind tunnel measuring airflow separation over a clay model — but it directly shaped the smooth, sloped-nose look that defined Ford’s production cars through the 1980s and beyond.

That same pursuit went fully digital and fully diesel with the Volkswagen L1 concept, unveiled at the 2009 Frankfurt Motor Show. Built as a narrow, teardrop-profiled two-seater with the passenger seated behind the driver, aircraft-cockpit style, the L1 paired a tiny diesel-hybrid drivetrain with a drag coefficient of just 0.195 to hit consumption figures around 1.4 liters per 100 kilometers — north of 170 miles per gallon. It never reached showrooms in that exact form, but its shape and thinking evolved directly into the production Volkswagen XL1 a few years later, proving the century-old lesson still held: shrink the drag, and the efficiency gains follow almost automatically.

The Bertone Nuccio, shown at the 2012 Geneva Motor Show, carries more weight than its sharp, low-slung silhouette first suggests. Named for Giuseppe “Nuccio” Bertone, who led the legendary Italian coachbuilder through decades of landmark designs, the concept was built on Alfa Romeo mechanicals as a statement of where Bertone’s design language could still go — and it turned out to be one of the storied house’s final public statements before the company collapsed into bankruptcy in 2014. Its aggressive creases and glass-canopy roof read less like aerodynamic necessity and more like a swan song, a reminder that a coachbuilder’s survival, like a streamlined body, depends on staying ahead of the air moving past it.

And finally, the Toyota Fun-Vii, unveiled at the 2011 Tokyo Motor Show, pushes the story somewhere the Siluro Ricotti’s engineers could never have imagined: a car whose entire smooth, bubble-like exterior is conceived as a giant display surface, its color and graphics changeable at will, its interior imagined as a rolling extension of a smartphone rather than a cockpit. The aerodynamic teardrop form is still there, softened into something closer to a friendly capsule, but the obsession has shifted — from cutting through air to broadcasting identity. It is a rolling piece of futurism, a full century after Castagna riveted aluminum around a touring chassis and decided a car could look like the future, too.