How 1950s Car Tailfins Took Inspiration From WWII Fighter Planes

As much of a symbol of the 1950s as the poodle skirt and jukebox, the tailfin transformed the automobile into a four-wheeled embodiment of a country speeding toward the Space Age and leaving World War II in the rearview mirror. Inspired by aviation styling, the bold, chrome-trimmed fins rising from cars’ prodigious rear fenders symbolized American postwar prosperity and confidence.

Although they appeared aerodynamic, tailfins were primarily sleek decorative flourishes with little practical engineering function, a triumph of form over function. “The tailfin had about as much to do with serious car design as a hula hoop,” says Witold Rybczynski, author of The Driving Machine: A Design History of the Car. “They were a fad.”

After the futuristic ornaments made their widespread debut in 1948, Detroit went fins up. Throughout the 1950s, tailfins sprouted on vehicles of every kind, from station wagons to pickup trucks. But the end of the decade coincided with the precipitous demise of the tailfin, which faded into automotive history.

The idea for the car tailfin first took flight on a military runway in 1941. Seeking inspiration from the skies, General Motors design chief Harley Earl brought his top staff to a U.S. Army air base near Detroit to view the top-secret Lockheed P-38 Lightning fighter plane, powered by a pair of GM-built engines.

The aircraft’s twin tail rudders reminded Earl’s protégé, Frank Hershey, of the streamlined fins of marine animals knifing through the ocean. As they worked on the company’s 1943 model line, GM designers developed prototypes featuring an upswept rear fender design that resembled the P-38’s tail.

The attack on Pearl Harbor halted those designs, but GM emerged from World War II as an automotive leader. Profiting from pent-up consumer demand, GM sold cars—particularly its luxury Cadillac line—as much for their styling as their engineering.

When leading the team designing Cadillac’s first postwar model, Hershey still held onto the memory of the P-38 Lightning. The stylistic innovations incorporated into the 1948 Series 62 Cadillac included a pointed nose, a pair of protruding bullets on the bumper and two modest vertical fins rising from the rear fenders that housed taillights, one of which concealed the fuel filler pipe.

The tailfins made the Cadillac’s rear design as distinctive as its front. Initial reaction to the modern accents was mixed, however, with half the attendees at GM automotive shows disapproving. Panicked executives inside the automaker rushed design work on a finless rear fender, but record sales of the 1948 Cadillac confirmed the popularity of the tailfins, which linked the luxury car’s identity to the jet airplanes and rockets capturing the public imagination. “Cadillac owners realized that it gave them an extra receipt for their money in the form of a visible prestige marking for an expensive car,” Earl said.

The popularity of the 1948 Cadillac convinced GM to include tailfins on additional model lines, and other automakers soon followed. Throughout the 1950s, a sea of tailfins on coupes and convertibles inundated drive-in movie theaters, roadside diners and newly constructed interstate highways. The vertical appendages grew in height and length with every passing year. A '59 Cadillac model, for example, featured tailfins as high as 45 inches. They appeared on pickup trucks such as the Dodge Sweptside, car-truck combinations such as the Ford Ranchero and station wagons such as the Chevy Nomad.

The design trend grew into an international phenomenon. “Most European manufacturers—including Mercedes—adopted some modified version of the fin, so influential was the mighty American car industry at that time,” Rybczynski says. Tailfins even spread behind the Iron Curtain, appearing on Soviet-built ZiL and Volga automobiles.

Some marketing campaigns from Detroit’s 'Big Three’ carmakers put tailfins front and center. Magazine advertisements for the 1957 DeSoto featured a rear view of the car and the slogan: “This baby can flick its tail at anything on the road!” Tailfins’ angular aesthetic and futuristic lines even spread beyond Detroit, influencing the design of household appliances, furniture and flashing neon signs at roadside attractions.

After dramatically restyling Chrysler’s 1955 model line as part of the company’s “Forward Look,” Virgil Exner, the automaker’s top designer and a former Earl acolyte, incorporated dramatic tailfins on his 1957 models, particularly the Imperial Crown. “Earl, who was about to retire, and GM were caught flat-footed,” Rybczynski says.

Exner’s widespread adoption of the tailfin surprised GM designers, who were planning to phase them out, and ignited the “fin wars.” Scrapping their plans for the 1959 models, which they feared would look dated compared with Chrysler’s vehicles, GM designers reversed course and incorporated even more outrageous tailfins that seemed to approach the size of the aircraft tails that initially inspired them. Cadillacs, particularly the Eldorado, featured the loftiest tailfins on the road and Chevrolets sported flamboyant, outward-sweeping tailfins that resembled batwings.

The last year of the decade would end up marking “peak tailfin.” “The 1959 was like letting a tiger out of the cage, saying ‘go!’” recalled GM designer Chuck Jordan. “Then, of course, we got sobriety.”

As the 1960s dawned, the sun began to set on the tailfin, which quickly became an automotive relic of the 1950s like the Ford Edsel. With their ornamentation and size, cars had become bulkier—the lightest 1959 Cadillac weighed 4,600 pounds—and more expensive to manufacture when a recession hit at the start of the 1960s.

Cars became smaller and safer. Automotive designers stripped their models of heavy chrome and clipped the tailfins. Bill Mitchell, who replaced Earl as GM’s chief designer, slimmed down the company’s cars. By 1961, Cadillacs were the only GM cars with tailfins. They disappeared from Detroit’s new model lines by 1965, enduring only in pop culture and memories of the 1950s.

“Fins disappeared so quickly because they were a fad, and that is the nature of fads: They appear quickly and as quickly vanish,” Rybczynski says.