David visits France's Cite de l'Automobile Museum, the largest car museum in the world. Plus, a former drag racer who broke is back in an accident brings his '68 Firebird in for some upgrades that will allow him to drive it again.

David and Janice explore the Cite de l'Automobile's restoration department, where they find one of the world's most expensive cars, plus a rare Panhard Dynamic that David thought no longer existed.

A 1977 Ford F-250 barn find proves to be in better condition than David could have ever imagined. Janice takes the Guild girls out on a test drive in her recently acquired and repaired 1961 Hillman Minx.

David and Janice must pick seven unique cars for the Atlanta Concours d'Elegance's Magnificent Seven competition. Brad discovers that the engine in a 1935 Bugatti Aerolithe is in rough shape from extensive touring.

Ron and Greg find some strange restoration work as they dig into a '70 Dodge Charger, and Johnney finishes up a custom job on a '57 Cadillac Eldorado Brougham, once considered the world's most expensive car.

Larry visits for the first time in months, and is excited by the advancement of his two projects, a 1948 Delahaye 135MS Cabriolet, and a custom Mercury being designed in California by renowned car builder Keith Dean.

A 1977 Ford F-250 pickup truck makes a miraculous evolution from barn find to beauty, and the owners arrive for the unveiling. Brad has a challenging time figuring out the starter and starter clutch in the unusual engine of an obscure 1966 Honda S600.

The crew learns about the oil history of a town when its fire department brings a 1925 International fire truck in for restoration. Brad, a volunteer firefighter, is eager to take on the project even though he knows finding parts will be difficult.

David and Janice visit their friend and car collector Tim, who has two new McLarens with the same serial number and matching carbon fiber bodies. He shows off a 2019 McLaren Senna, and Janice takes a ride in a 2014 McLaren P1.

The Guild is approached to restore a 1997 Land Rover Defender 90 as a tribute to filmmaker and environmentalist Rob Stewart, who died in a scuba diving accident while shooting a film. Also, Ron struggles to install a new 427 engine into a 1969 Corvette.

The shop is overflowing with muscle cars, while David focuses on his new antique-watch-repair business. Ron starts the brakes on a 1967 Ford Mustang convertible, and Johnney does final touches on a 1980 Pontiac Trans Am pace car in time for a test drive.