A driver asks Sammy for a few upgrades — including nitrous — in hopes of taking out a cocky competitor. Sammy performs stunts for a car commercial.

Kaitlyn and Meghan compete to be their dad's co-lead for an upcoming stunt. Sammy helps out an off-roader who's desperate to beat his brother.

With Sammy in his corner, car enthusiast Jeff Allen put his vintage Volvo up against Adam Carolla's racing Porsche that was once owned by Paul Newman.