What's My Car Worth?

Keith and Josh attend a Barrett-Jackson event in Scottsdale, Ariz., where they find a beautifully restored Chevrolet Chevelle SS LS5 and test out a Porsche 930 Turbo; Keith gets behind the wheel of a Ferrari 365 GTB/4 Daytona.

Keith Martin and Josh Nasar encounter plenty of muscle at a Barrett-Jackson collector car auction in Scottsdale, Ariz., including a Pontiac GTO Judge and a 1987 Buick GNX.

Keith and Josh catch up with an friend selling a Yenko in Scottsdale. Auctions America in Florida proves the new-school packs some punch with an eye-popping Lamborghini Gallardo.

In Florida, Keith tests the power of fuel-injection in a '65 Corvette, while Josh takes a spin in a '96 911 Turbo- the last year for those air-cooled engines. RM Auctions in Arizona offers a Ferrari-red-hot 512TR that's sure to put a smile on Josh's face

At RM Auctions in Scottsdale, an elegant short-nosed Ferrari 275 GTB is up on the block and hammers at an impressive number to a round of applause.

Barrett-Jackson in Scottsdale, Arizona finds Keith and Josh flexing some muscle in an Oldsmobile 4-4-2 with the highly sought-after W30 option, and a legendary Shelby 289 Cobra with sentimental value hits the auction block.

It's graduation day for the Class of 1991, as Keith & Josh reflect on '91 examples that are now 25 years old and can be considered classics. Josh hits Florida in a '91 Ferrari Testarossa, and the hosts compare the car with a '91 Alfa Romeo Spider.

Barrett-Jackson in Scottsdale is the setting for Keith Martin and Josh Nasar as they drive an ultra-low-miles Ferrari 512TR and a survivor 1967 Corvette that has been meticulously cared for.

In Arizona at RM Auctions, Josh gets a ride in a 2005 Ford GT- inspired by the Le Mans-winning GT40 of the '60s- with an uncommon and striking Quick Silver Metallic finish.

At RM Auctions in Arizona, an ultra-rare Miura SV hits the block- one of only five single-sump SVs sold new to the U.S.- and its attractive and iconic silhouette hammers to cheers and applause.

In Florida at Auctions America, Keith cruises in a beautifully restored and impossibly charming Alfa Romeo Giulietta Spider Veloce, while Josh hits the road in a 1997 Porsche Turbo S- the last 911 Turbo manufactured with the celebrated air-cooled engine.

Barrett-Jackson in Scottsdale is the place to be for muscle car enthusiasts, and Josh Nasar and Keith Martin find just that with a 1967 Shelby GT500 Fastback and a 1970 Plymouth Cuda with an original 440 Six-Pack that fires up the crowd.

Keith Martin and Josh Nasar get the V.I.P. treatment in Scottsdale, where Steve Barrett of Barrett-Jackson offers an incredibly rare (and incredibly fast) Saleen S7 supercar with Competition Package for evaluation.