Unlock All tracks:
Hold L + R, then press Up/Right + B at the Start screen.
Unlock All cars:
Hold L + R, then press Up/Left + B at the Start screen.
Get All tune-ups:
Hold L + R, then press Down/Right + B at the Start screen.
Mini cars:
Hold L + R, then press Right + B at the Start screen.
F1 car:
Hold L + R, then press Left + B at the Start screen.
View credits:
Hold L + R, then press Up + B at the Start screen.
