At car select, use the right joystick and hold LEFT or RIGHT to open the corresponding door on the car; hold UP to pop the hood, and DOWN to pop the trunk.
Floating Cars Cheat:
Use 210741974 MARTY as the name.`
Non-Vibrating Jelly Cars Cheat:
Use 07121974 FERGUS as a name.
Pancake Cars Cheat:
Use 21051975 PTITDAV as a name.
Small Cars Cheat:
Use 01041977 BIGJIM as a name.
Stretched And Skewed Cars Cheat:
Enter Gonzales SPEEDY as a name.
Wiener Sized Commentary Cheat:
Use a blank first name and use PALACH as the last name.
Wrecked Cars Cheat:
Use 25121975 PILOU as a name.