Activate the following cheats by entering the corresponding names:

CHEAT FUNCTION - CHEAT CODE
Master code - ZAKARY X
Select finish position; press [Shift] + <1-6> during game play. - ILIKETOCHEAT
All upgrades - MAD HOOKUP
All divisions unlocked - SAD CLOWN
Credits are not used up - KIYON
Steer in mid-air for big spins - TURN TRICKS
Big jumps - CHUNG KING
Defaults all cars with "lowering" kit - PLUMBER
Increase car mass - YOKOZUNA
Low gravity - MARS MODE
All trucks - BEANY
All tracks - LEAD TO ROME

Note: This procedure requires editing a game file; creating a backup copy of the file before proceeding is recommended. Enter the "vehicles" sub-directory that is inside the game directory. Use a utility such as WinZip or PKUnzip to extract the "physics.txt" file from any of the .zip files. Use a text editor to edit the "physics.txt" file and change the "//idealMaxSpeed" entry to "200". Save the file and add it back to the original .zip file. The top speed bar will be full for the vehicle when the game is played.