Indy 500 cheats and cheat codes for Playstation

Change replay views
While watching a replay, hold Select and push L1, L2, R1, R2, 
Triangle, Square, or X. 

Drag race
For a single player mode, highlight the "Qualify" selection 
at the Indy 500 mode screen, then hold L1 + L2 + R1 + R2 + Start. 

For two player mode hold L1 + L2 + R1 + R2 + Start at the 
handicap screen, 

Extra track and car
Push Circle, X, Triangle, Square, Circle, X, Triangle, Square, 
Circle, X, Triangle, Square buttons at the title screen.