hard driving cheats
Get to full speed (preferably but not necessary) and
press 'N' for neutral. Now you can cruise along at full
speed with easy steering and invulnerability. As long
as you stay in neutral you will have unlimited time as
well. Another trick is to repeatedly hit the 4 key (4th
gear) until the program has an error. Continue with the
right mouse button. Repeat until you get a high score.