Here are some cheats and tips for the game Micro Machines.
Fast car:
Pause game play and press Up, Down, A,
B, Left, Right, C, Start.
Expert mode:
Pause game play and press Left, Right, Left,
Right, Up, Down, Start, Down.
For even more of a challenge, pause game play and press Left,
Down, Up, Down, Right, Down,
A, Down.
Increased traction:
Pause game play and press A, Up, B, Down,
C, Left, Start, Right.
Unlimited lives:
Pause game play and press B, Down, C,
Down, Up, Down, Left, Right.
Bad collisions:
Pause game play and press C, Up, Left,
Right, A, B, A, C.