The rare 1969 Porsche 917K race care featured in the Steve McQueen movie "Le Mans" could sell for more than $20 million. Auction house Gooding & Co. of Santa Monica announced Monday that the car will be put up for bid in August. Porsche only built 25 of this model, and other cars of this variety have sold in the $10 million to $15 million range, the Los Angeles Times reports.