                             --- Hard Drivin' ---
                            ^^^^^^^^^^^^^^^^^^^^^^

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.

