10. Alfa Romeo 33 Stradale
Despite the fact it’s now irrelevant in the supercar class, in the late ’60s, Alfa produced one of the most interesting supercars ever built, the Tipo 33 Stradale. It was not only the most expensive production car at the moment, it was also the most exclusive. Powered by a screaming race-bred V8, Alfa sold only 15 of them (via Petrolicious).
The 33 Stradale looks gorgeous, but its production and public appearance were so limited people forgot about this car. Under the hood was a 2.0-liter V8 which revved up to 9,000 rpm, which was unheard of in the late ’60s. Despite all of that, the car was pretty disappointing to drive.