16. Alfa Romeo 33 Stradale
Despite the fact it is now irrelevant in the supercar class, in the late ‘60s, Alfa produced one of the most interesting supercars they ever built, the Tipo 33 Stradale. It was not only the most expensive production car, but it was also the most exclusive. Powered by a screaming race-bred V8, Alfa sold only around 15 Stradales. The 33 Stradale looks gorgeous but it’s production and public appearance were so limited, people have forgotten about this car.