Hidden command:
On the title screen, enter the following button sequence 3 times: circle, X, triangle, square.

Drag racing course:
On the Indy 500 mode screen, move the cursor over "QUALIFY" and hold L1,
L2, R1, R2 and START. For 2-player mode, enter the same codes at the handicap screen.

Change viewpoint:
During replay, hold SELECT and hit each of the following buttons for a different view: L1, L2, R1,
R2, TRIANGLE, SQUARE, X.

Bonus track and car:
At the title screen, press Circle, X, Triangle, Square, Circle, X, Triangle, Square, Circle, X,
Triangle, Square.