What's My Car Worth takes viewers on a tour of the greatest garages in the U.S. Car assessment experts offer sellers their best bets.

Collector car expert Bill Stephens and Keith Martin take a ride on the wild side when they appraise classic American big block beasts, including a barn find Boss 429, a Shelby GT500, and a Sting Ray at the Petersen Automotive Museum Swap Meet in Los Angeles.

The Big Blocks

Collector car expert Bill Stephens and Keith Martin appraise classic muscle cars including a Plymouth Superbird and a Mustang Mach 1, and challenge owners to guess the true value of their vehicles, at the Petersen Automotive Museum Garage Sale and Swap Meet in Los Angeles.

American Icons

Collector car experts Bill Stephens and Keith Martin visit the annual Petersen Automotive Museum Garage Sale and Swap Meet to examine classic European sports cars and challenge the owners to guess their true values, including an Austin Healey 3000, a 1965 Porsche 356, and a Jaguar E-Type.

The Sports Car Craze

Collector car expert Bill Stephens and Keith Martin visit Gooding and Company's auction in Scottsdale, Arizona to appraise classic European sport cars, including a 1954 Jaguar XK120 M Roadster and a 1967 Maserati Mexico Speciale.

Euro Sports

At the 2010 Gooding & Company luxury automobile auction in Scottsdale, Arizona, collector car expert Bill Stephens and Keith Martin appraise some of the fastest and most iconic sports cars of all time, including a Ferrari 365 GTB/4 Daytona and a 1965 Shelby GT350 Supercharged Prototype.

American Challenge

Collector car expert Bill Stephens and Keith Martin of Sports Car Market Magazine evaluate real classics at the Gooding & Company auction in Scottsdale, Arizona, including a Rolls-Royce Phantom II with a Merlin airplane engine.

27 Liters, 1100 Horsepower

Collector car expert Bill Stephens and Keith Martin appraise fascinating classic American and European collectibles including a rare and luxurious Facel Vega FV-1 and a classic 1951 Ford F1 Pickup, at the 2010 Gooding & Company auction in Scottsdale, Arizona.

American & European Classics

At the RM Auction on Amelia Island, collector car expert Bill Stephens and Keith Martin of Sports Car Market Magazine look under the hood to put a price on some of the finest vintage cars of their kind, including a glamorous Bel Air and a fast-moving Ferrari.

The BMW Micro Car

Collector car expert Bill Stephens and Keith Martin of Sports Car Market Magazine evaluate elegant vintage automobiles including a 1932 Duesenberg from one of the country's foremost private collections.

American Classics - The Golden Age

Collector car expert Bill Stephens and Keith Martin of Sports Car Market Magazine visit one of the most prestigious car shows in America and put a price on some of the most iconic cars of their time, including a rare aluminum alloy Ferrari.

Two Decades of Horsepower

Collector car expert Bill Stephens and Keith Martin of Sports Car Market Magazine drop in to the celebrated Amelia Island Concours d'Elegance to appraise masters of the road, including a rare 1965 Ferrari 500 Superfast once owned by royalty.

The Aga Khan's Car

Collector car expert Bill Stephens and Keith Martin of Sports Car Market Magazine visit one of the most prestigious car shows in the country and appraise vintage American and European sports cars, including a classic Corvette and a 1959 Mercedes-Benz 300SL.

Roadster Rampage

Collector car expert Bill Stephens and Keith Martin of Sports Car Market Magazine examine magnificent cars worth millions at the Gooding and Co. auction, including a Best in Show winner from Pebble Beach.