What's My Car Worth?

A 1967 Ferrari 275 GTB/4 that was once owned by actor Steve McQueen goes up for auction.

A Barrett-Jackson auction features a 1970 Shelby GT500 and a Mustang Mach 1 428 Cobra Jet.

Vehicles up for auction include a Lamborghini Countach with low mileage and a pricey Shelby Cobra 427.

A 1964 Ferrari 275 GTB/C Speciale is sold by RM Auctions in Monterey, Calif.

Auction vehicles include a 1970 Chevelle SS LS6 and a Ferrari FXX.

Auction vehicles include a 1969 Chevrolet Camaro SS and a 1968 Ford Mustang Shelby GT500KR.

Keith and Josh drive a Porsche 911 Turbo; a 2003 Ferrari Enzo crosses the auction block.

A 1970 Chevrolet Chevelle SS 454 fires up the crowd at a Barrett-Jackson auction in Arizona.

Josh takes a spin in a black-on-black Hemi Road Runner with an Air Grabber hood.

A beautifully-restored 1967 Toyota 2000GT is featured at an RM Auctions event in Monterey, Calif.

Keith and Josh inspect a Yenko Camaro with tremendous power; Josh takes a spin in a Trans Am Super Duty 455.

Keith Martin and Josh Nasar tackle the streets of Fort Lauderdale in a mighty Mustang Boss 302.