4. 1964 Ford GT40 Prototype – $7,000,000
This car was one of the first GT40s built which was a lightweight version with a 4.7-liter V8 mounted amidships and a Le Mans pedigree.
The stunning 1964 Ford saw a podium finish at the 1965 Daytona Continental 2,000 Kilometers where Bob Bondurant and Ritchie Ginther piloted it to the third place.
Boasting its original engine and gearbox in running form, this amazing car is a piece of US racing history.
The model sold for $7,000,000 at Mecum Auctions in April 2014 which makes it the second Ford in the list of expensive American cars.
