Including that fact that you can fly.
The game is full of neat and useful cheat codes, and one of them gives you the ability to soar across Los Santos like Superman, except it's quite easy to hit things and die.
The code for the cheat is:
L1 L2 R1 R2 Left Right Left Right L1 L2 R1 R2 Left Right Left Right
LB LT RB RT Left Right Left Right LB LT RB RT Left Right Left RightSuggest a correction