Cadillac invented the automobile tail fin when it added modest little bumps to the rear fenders of its 1948 models. Fins reached their zenith on the 1959 Cadillacs. This Cadillac Eldorado Biaritz Convertible was the ultimate space-age car of the 1950s with the highest tail fins ever put on an American production car. Only 1320 of these vehicles, which originally sold for $7401, were produced.

Source: Auto Life