The following cheats do not work in Practice Mode. To use them, 
you must type them as your name. You will hear an engine rev up 
if done correctly. To enter multiple cheats, after typing the 
cheat, do not press enter. Instead, backspace to the beginning 
and type either a new name or another cheat. Repeat as necessary.

Code Result 
HEDGEHOG0     Activate Cheats 
NOGAS     Unlimited Gasoline 
CLASSIC     1956 KHK Bike