300 mph car
At the car selection screen, quickly press Circle, Square, L1, R2, Right, Left, Up.

Furasshu-sama car
At the car selection screen, quickly press Up(2), Down(2), Left, Right, Left, Right, Square, X.

Perfect car
Finish all classes in all championship categories. Then, make a car and enter "Fusshusama" as a name. Enter "Bye Seya" as a team name.

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