At the main menu press L1, R2, L2, R1, Up
Big Trucks
At the truck selection screen hold L2 + L1
Ice Cream Truck
At the main menu press Left, Left, Left, Up, Down, L1, R1
Invincibility
At the main menu press L1, L1, R1, R1, L2, L2, R2, R2. During the race on Endurance Mode, press Triangle to be airlifted to the next checkpoints
Next Checkpoint
At the main menu press L2, Left, Right, Up, Down, R2
Super Car
At the main menu press Left, L1, R2, R1, Left, R2, R2, R2
Super Grip