When Richard's '29 Packard receives an invitation to the fabled Concours d'Elegance at Pebble Beach, he challenges the Monkeys to a motorcycle build off to keep them busy while he's away.

After 2017 Daytona 500 winner Kurt Busch makes a surprise visit to Gas Monkey, Richard strikes a deal to build him a '72 Pantera to race against fellow NASCAR champion Joey Logano.

Richard and the Monkeys make an attempt to finish Kurt Busch's custom '72 Pantera in time for his grudge race against NASCAR superstar Joey Logano and his Factory 5 Shelby Daytona.

Richard sells the '79 Camaro to prepare for Barrett Jackson, the biggest auction of the year. Aaron's team builds a '68 Impala while Richard and Dennis buy a '64 Corvette Stingray. Richard pulls the '66 VW bus, '69 F100 truck and '76 C10 to auction.

As work on a smashed up 2005 Ford GT continues, Richard heads to Indiana to try to sell a Shelby Cobra prop car used in the superhero movie Iron Man.

Richard and Aaron try and transform a vintage '71 Dodge Scat Pack Challenger.

Richard, Aaron and the Gas Monkey crew unbury a '64 Impala buried in 10 years of debris and bring it back to life. A 1951 Bruco Fire Truck sparks former firefighter Richard's fancy as does a 1955 Caddy Coupe de Ville nicknamed Dolly.

Richard makes a deal to restore the first two Firebirds ever made, which comes with a strict deadline and pricey penalty; Aaron learns to race.

Aaron and his team attempt to get the '71 Challenger build to accept the 2015 Challenger technology. In the process, they create a one of a kind resto/mod. Richard buys a busted up '34 Plymouth and the crew takes the '57 Shorty bus for a test drive.

Richard buys a '78 Cutlass so Aaron can build Gas Monkey's first ever lowrider, only to discover that Aaron's plan to create custom hydraulics is something he's never attempted before.

The '32 5 window Ford Coupe Richard bought as an easy build for the Monkeys continues giving them problems, as weather and car issues threaten to derail Aaron's trip to Pike's Peak.

Richard, Aaron, and the Gas Monkey crew try to "knock the ugly outta" a '48 Chevy Fleetmaster. Richard makes a profit but still gets schooled on a '74 Corvette. It's a tough Oklahoma crowd at the auction for their Chevy and "Scarface"-worthy '63 Caddy.

In this two-part show, Richard and business partner Dennis Collins buy a wrecked red Ferrari F40 for $400,000 then spend $295,000 to paint it black and upgrade it with modern technology. Dennis buys the finished car for his collection.

It's showtime at Barrett Jackson with wheeling-and-dealing throughout the week showcasing the excitement. Richard's Stingray arrives just in time for the start of the auction. Meanwhile, Aaron attends NHRA in Vegas to see how team Gas Monkey performs.

While Richard takes his '29 Packard to compete at the elite Concours d'Elegance at Pebble Beach, the Monkeys race to complete their motorcycles in their big build off.

Aaron tells Richard he is quitting Gas Monkey just as Richard agrees to a drag strip showdown with Big Chief from Street Outlaws. The Monkeys are stuck to build a race car on their own at the same time he's challenged to his own race against another set of Outlaws.

Gas Monkey teams up with the Gary Sinese Foundation to build a custom '81 Jeep CJ7 as a throwback tribute to the soldiers for Veteran's Day. Later, an original '68 Chevelle has Richard seeing green but only if he can part with his California dream.

Richard and Aaron find the hot rod of their dreams: a rust-free 1931 Model A. As renovation costs pile up, Richard looks to make some fast cash with a couple of quick flips, including the "Drive Angry" Buick Riviera and a Chevy 210.

Richard and Aaron find a '55 Chevy Bel Air as well as a 1950 Oldsmobile Rocket 88 coupe, which had been perfectly preserved in a garage for over 50 years. They have 48 hours to fix up a broken-down '73 Caddy convertible for two Aussies hitting Route 66.

Richard and Aaron turn the granddaddy of big cars, a 1970 Lincoln Continental Mark III, into a muscle car and bring a '68 Ford pickup back to life. Richard scoops up a 1970s style hot rod kit car with a mysterious past.

The Gas Monkey guys "frankenstein" together a '68 Ford F-100 truck by blending together two vehicles that shouldn't go together. Richard relives his youth with a '77 Trans Am Firebird. He flips a '67 Caddy convertible to an international buyer.

A widow sells her husband's Ford ’32 Cabriolet, the team rebuilds a ’62 Corvette.

Richard and the Gas Monkey crew upgrade a 1977 TransAm for $70,000 plus a potential $65,000 bonus. Guest stars include Burt Reynolds (The Bandit from Smokey and the Bandit) and Paul Williams (Little Enos).

With a 10K-a-day penalty looming, Richard can't afford to lose any more time on the two Firebirds' concourse restoration and by the end of the project, the garage says goodbye to Jordan and Tom. Richard flips a '49 Mercury that comes complete with a tuxedo cat named Buster, who becomes part of the Gas Monkey team.

With Aaron on vacation, Richard lets the Monkeys give his first car he owned in high school the Gas Monkey treatment, a '74 vomit green Mercury Comet.