Sports Car GT Codes -

All tracks:
Press Down(2), Left, Right, Up, Left, Circle, R2 at the "Press Start" screen.

All cars:
Press Up, Right, Left, Right, Down, Up at the "Press Start" screen.

Additional money:
Press Up, Left(2), Right, Down, Right, L1, Square at the "Press Start" screen"

Hint: Quick profit:
Purchase the Silver Saleen Mustang in GT3 mode for $39,000. It can immediately be sold for $16,000 more than that price.