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Unlock ending sequence
If you can't complete the game and still want to see the ending, then try entering this code at the title screen with controller two:
R1, Circle, Triangle, Right on controller two.
All cars
Even if you didn't want to see the ending, you are going to have to input the code if you want to use this cheat which will unlock all car.
So... Do the unlock ending sequence cheat, then pick arcade mode and enter this combo with controller two:
R1, Circle, Triangle,