To unlock the cars below, complete the corresponding goals:

Gangster Car: Beat Pursuit 3.
Hot Rod Car: Beat Face Off 1.
Japanese Muscle Car: Beat Face Off 2.
Oval Racer: Beat the car in Face Off 2.
Polic Car: Beat Pursuit 1 and destroy the villain's car.
Super Car: Beat Face Off 4.
Custom Compact: Beat Custom Series Qualifier.
Custom Coupe: Get all gold medals at Split Second Grand Prix.
Custom Muscle Car: Beat Pursuit 6.
Custom Pickup Truck: Beat Pursuit 5.
Custom Roadster: Get all gold medals at the Point Of Impact Grand Prix.
Custom Sports Car: Get all gold medals at the Speed Streak Grand Prix.
Custom SUV: Beat Pursuit 4.
Classic 1970 Car: Destroy the car with a police car in Pursuit 2.
Drivers' Ed Car: Get all gold medals in Driving 101.