15. 1968 Alfa Romeo Tipo Stradale
The fastest car in the world when it hit the open market, its name means “road-going” in Italian, and that name is still used by carmakers to label a street-legal version of a former racing car. Its butterfly doors gained it instant attention, and its rear mid-engine mount and rear-wheel drive did even more so. Introduced at the Sport Car Show in Monza, Italy, in 1967, only 18 were ever made. Five of its concept cars are on display at the Alfa Romeo Museum.