Bonus track and car

At the title screen, press Circle, X, Triangle, Square, Circle, X, Triangle, Square, Circle, X, Triangle, Square.

Drag race

For one player mode, on the Indy 500 mode screen, highlight the "Qualify" option and hold L1 + L2 + R1 + R2 + Start. For two player mode, at the handicap screen, hold L1 + L2 + R1 + R2 + Start.

Alternate replay views

During a replay, hold Select and press L1, L2, R1, R2, Triangle, Square, or X.