Aaron bets Richard he can finish a 1980 El Camino faster than anticipated.
Aaron has the guys build a '55 Chevy for the Barrett-Jackson auction.
Problems with the '55 Chevy may prevent Richard from going to auction.
Aaron's bet that he can finish the 1980 El Camino quickly is jeopardized.
Aaron helps the guys start on a '65 Volkswagen Beetle before vacation.
Richard has the guys take on a vomit green '74 Mercury Comet.
The guys are on their own after Aaron quits his job at Gas Monkey.
Aaron struggles to get his BMW ready for a race against the Street Outlaws.