Here are some cheats and tips for the game Rally Championship.
Race Backward:
To race on backward tracks, start a game in “Arcade Mode.” Then, at
the “Select Game” screen, put the cursor on either “Championship” or
“Practice.” Then hold Y and press C. When your car appears, you will
be facing backwards on the track.
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Race as the Hidden Car:
Press X, Y, X, Y, X at the mode-select screen. Then pick Practice or
Championship mode. At the car-select screen, keep pressing Down, and
you can select a hidden car.