Here are some cheats and tips for the game Motoroader.
Music select:
Pause game play, hold Select, and press I or II.
Sound test:
Enter MUSIC or ART88 as a player name.
View winning time:
Hold Select and press Right at the course selection screen.
Slippery course:
Hold Select and press Left at the course selection screen.
$50,000:
Hold Select and press II at the course selection screen.