Cars - Unlock All Cars

Unlock All Car Colors:
At the Start screen, press Up, Up, Left, Right, Right, Left, Down, Down.

Unlock All Drive-in Screen Shots:
At the Start screen, press Left, Down, Right, A.

Unlock All Levels and 90 Bolts:
At the Start screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A.

Unlock Radiator Cap Secret Circuit:
At the Start screen, press Left, Left, Right, Right, B, B A.