From Wikipedia: "The 1958 Buick was marketed beginning in September 1957, just as the space age began with the launching of Sputnik I on October 4 of that year. This Buick was nicknamed "the king of chrome" and had rear tailfins reminiscent of a rocket ship. In 1959, Buick had the aerodynamic Delta Fin. The fin made parking difficult and blocked the driver's line of vision. In 1960, the fin was snubbed down and disappeared in 1961, although vestiges of it reappeared in the 2000-2005 LeSabre line with its upswept sides."