1962 Ferrari 250 GTO

Widely regarded as the greatest sports car of all time, the 1962 Ferrari 250 GTO became the standard-bearer to which all other Ferrari models are compared to. The Italian automaker only built 39 models of this bad boy - 33 of the "normal" cars, three 330 LMB models, and three "Type 64" cars with revised bodywork - and has since grown in stature as not only the greatest sports car of all time, but also the most expensive one at that. An auction of the V12 302 horsepower machine held last May was sold by RM Auctions for an staggering $25 million.