Moped Army

All Cash
Pause Game and Press Triangle, Square, Triangle, Square, Circle.
Unlock Mustangs and Vipers
R2, Circle, Triangle, L1, L2, Left, Down, Right, Up
Unlock 2 Players
R1, R2, Triangle, Square, X, L1
All Cash
Pause Game and Press Triangle, Square, Triangle, Square, Circle.
Swimming Under Water Ability
R2, R2, L1, Circle, Left, Right, Up, R2
Cadillac
Press Start, Left, Right, Triangle, Circle, L1, R2, R1, L2.
Infinite Armor
L1, R1, R2, L2, Triangle(7), Square(9). You should hear a dog go "bark bark"