Enter the following at the Main Menu. A sound will confirm entry:
Invincibility: Left, Left, Left, Left, Up, Down, L1, R2.
Big Trucks: L1, R2, L2, R1, Up.
SuperTruck: L2, Left, Right, Up, Down, R2.
Better Traction: Left, L1, R2, R1, Left, R2, R2, R2.
Skip Checkpoint: L1, L1, R1, R1, L2, L2, R2, R2.
During an Endruance race press Triangle to skip checkpoints.
Thanks to Revolution readers Rowan Mcdermolt and Tipper Gore (hmmmm...)!!