Heres a link of the most expensive cars you can actually buy in the U.S.
Mad $ Heres a list of the most expensive cars that have been sold and the prices paid for them: (from #10 to #1, #1 was sold for $24 million) (prices in U.S. dollars)
1956 Ferrari 860 Monza -- $2.5 million
1933 Alfa Romeo 8C 2300 Monza Spider Corsa -- $2.53 million
1937 Mercedes-Benz 540K Special Roadster -- $3.63 million
1937 Alfa Romeo 8C 2900 -- $4.07 million
1964 Shelby Cobra Daytona Coupe -- $4.4 million
1932 Alfa Romeo Tipo B -- $5.6 million
1962 Ferrari 330 TRI/LM -- $6.5 million
1931 Type 41 Bugatti Royale -- $8.7 million (this model weighs 7000 lbs)
1962 Ferrari 250 GTO -- $16.6 million
1954 Mercedes W 196 -- $24 million