The most impressive car you could possibly own? This old 1967 Ferrari 275 GTB/4 that Steve McQueen once drove and had the pink slip to. It was heavily customized by The King Of Cool to his very liking and was delivered to him on the set of the 1968 crime-drama Bullitt. For those with impeccable taste and VERY deep pockets, it will be up for sale at the RM Auctions Monterey event in California on August 15th. Expect the price tag to be around $10 million, if not more, but that's what you gotta pay to get a hold of something this incredible.