When adding to your car collection, rarity tops every enthusiast's list. Being the last of only ten ever made, the 1968 Ferrari 275 GTS/4 NART Spider is about as scarce as they come. The first "one of those red Italian things" can be seen in The Thomas Crown Affair and was later acquired by the film's star Steve McQueen. Although the car has passed through many pristine collections and has seen some minor restorations, chassis number 11057 maintains fully matching numbers throughout and includes the original Colombo V12 engine. It'll be auctioned off in Monaco May 14th, and could top the prior NART Spider record of $27.5 million.