The auction of the sixteen most expensive cars ever sold has come to an end, and it is no surprise that there are a lot of them - eight, to be precise, if you include the Ferrari 250 GTO and the Mercedes - Benz GTS - AMG GT3. The 10 most expensive cars ever auctioned are rounded out by the 1962 Ferrari250 GT O'Giolelli, which recently set a new record for the most expensive car in the world with a price of $1.5 million.