Baja Buggy: [Submitted by: Jason Donovan]
Finish Destruction Junction with the best time in time trial mode with the Street Rocket.

Rag Top:
Finish Alpine Ridge with the best time in time trial mode with the Baja Buggy.

Blue Demon:
Finish Seascape Sprint with the best time in time trial mode with the Rag Top.

Hatchback:
Finish Terminal Impact with the best time in time trial mode with the Rag Top.

Low Rider:
Finish Metro Challenge with the best time in time trial mode with the Rag Top.

Woody Wagon:
Finish Bayou Run with the best time in time trial mode with the Rag Top.

Hot Rod:
Finish Sunset Canyon with the best time in time trial mode with the Rag Top.

Police Car:
Finish Midnight Rumble with the best time in time trial mode with the Hot Rod.

Street Rocket:
Finish the Novice Championship with a gold using any car.

Taxi:
Finish the Amateur Championship with a gold using the Street Rocket.

Pick up truck:
Beat the second circuit with the Taxi.

Ambulance:
Beat the legend Circut level with the Pick up truck to get the ambulance.

Quick start:
Press A immediately after "Set" is announced at the start of a race.

All Vehicles: [Submitted by: Jason Donovan]
Each time you win the World Championship with one car anopther will be unlocked. They are different at each difficulty level.