Nitro Pack Codes

Here's what the specials do:

Cup Holders reduce the probability of being hit by 10%.
Structo Bumpers double your front and rear chassis reinforcement.
Heated Seats give you 10% more ammunition.
Curb Feelers reduce the likelihood of flipping your car.
Mud Flaps reduce the amount of chassis damage you receive from vegetation.
Dashboard Mary adds 10% damage to each round fired, with a minimum damage increase of 1