Invisible car:
Select the female driver with short blond hair at the character
selection screen. Select the green car, and keep this vehicle
highlighted. Hold Option 1 and press A and the car will turn black.
This car will be invisible to radar and normal vision during game
play.

Unlimited ammunition, rapid fire:
Select the male driver with blonde hair at the character selection
screen. Select the tan car, and keep this vehicle highlighted. Hold
Option 1 and press A and the car will turn red with a black top.
Unlimited ammunition and rapid fire weapons will be available
while playing the game.

Paint sprayer:
Press Option 1 + Option 2 while on foot.

Locked view:
Hold B while selecting an alternate view, hold Option 2, then release
B. Your view will be locked in this position until B is pressed again.