Unlock Rhino
During gameplay press Circle, Circle, L1, Circle, Circle, Circle, L1, L2, R1, Triangle, Circle, Triangle

Unlock Bloodring Banger
During gameplay press Down, R1, Circle, L2, L2, X, R1, L1, Left, Left

Unlock Police Ranger
During gameplay press Up, Right, Right, L1, Right, Up, Square, L2

Unlock Hotring Racer #1
During gameplay press R1, Circle, R2, Right, L1, L2, X, X, Square, R1

Unlock Hotring Racer #2
During gameplay press R2, L1, Circle, Right, L1, R1, Right, Up, Circle, R2

Unlock Romero
During gameplay press Down, R2, Down, R1, L2, Left, R1, L1, Left, R

Unlock Stretch
During gameplay press R2, Up, L2, Left, Left, R1, L1, Circle, R

Unlock Trashmaster
During gameplay press Circle, R1, Circle, R1, Left, Left, R1, L1, Circle, Right

Unlock Caddy
During gameplay press Circle, L1, Up, R1, L2, X, R1, L1, Circle, X