A 1968 Ford GT40 racing car went for $11 million, thus becoming the costliest car from America ever to be sold at an auction. The 1968 Ford GT40 Gulf/Mirage racer in blue with marigold stripes here, was initially estimated to be auctioned for $8 million at an auction to be held by RM Auctions at Monterey, but as is the case with good old cars, this one too exceeded expectations.