All cities
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At the main menu, press Triangle, L1, Triangle, L1, Triangle, R1.
All cars
——–
At the main menu, press Triangle, L2, Triangle, R2, Triangle, L2, Triangle, R2.
All bonus levels
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At the main menu, press Triangle, L1, Triangle, R1, Triangle, L2, Triangle, R2.
Win single player game
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At the main menu, press Triangle, L2, Triangle, R2, Triangle, L1, Triangle, R1.
Stage skip
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While playing a game, press Up, Down, Up, Down, Left, Right, Left, Right, Down,
Left, Up, Right.
Infinite time and continues
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While playing a game, press Up, Down, Up, Down, Left, Right, Left, Right,
Up, Left, Down, Right.