To 'win' the level:
Hold down Ctrl and Shift while typing "getdown". All the cars will attack you. After you die you will start on the next level. Dig it baby.
Hold Ctrl and Shift then type WIGGLEBURGER. It makes the screen wiggle a lot. Freaky.
I can see clearly now:
Hold down Ctrl and Shift while typing "thirdnostril" and it increases your radar.
While in Multi-Melee, go to the Rattler then Configure Chassis. Enter retpocileh on Rename Variant and then you click done and save. When you look at the name of the car it says something about a helicopter and nothing about the Rattler, and when you start you'll be a heli!
On the last level of the game you have a choice between a tank, a car, and a mail truck but what you don't see is the helicopter in the upper right hand corner of the screen. Click on it twice and BAM! You're in a chopper....
To be a tank in Multi-melee pick the Rattler and type in the name variable "knat"