At the car selection screen, hold C-Up + C-Left + C-Down. Now the Muscle Car will become an All Terrain Vehicle, the La Bomba will become a School Bus, and the Devastator will become a Police Car.

At the track selection screen, hold L + C-Left + C-Down. Now the U.S. 101 track will become Golden Gate Park.

At the track selection screen, hold L + C-Right + C-Down. Now the Grand Canyon track will become San Francisco.

At the track selection screen, hold L + C-Right + C-Up. Now the Beverly Hills track will become Indiana.

Use the Bus or Police Car to get a new Hot Time. Then, enter your initials and remain at the "Hot Times" screen. Now scroll to the bottom of the display and hold Analog-Left for thirty seconds. A head will appear on the rolling conveyor belt and say "I love this job". Press Start and begin a new race and press Brake, Brake, Brake, Gas, Brake, Gas after each checkpoint. Although your vehicle will not exceed its top speed, it will accelerate faster. Note: This code is only enabled after you Cruise the USA three times to get your vehicle to the fourth level.

Use the Bus or Police Car to get a new Hot Time. Then, enter your initials and remain at the "Hot Times" screen. Now scroll to the bottom of the display and hold Analog-Left for thirty seconds. A head will appear on the rolling conveyor belt and say "I love this job". Press Start and begin a new race with the Bus or Police Car. Press Brake twice, then hold Gas to flash the lights of the Bus or turn on the Police Car's siren. The lights and siren will be active as long as Gas is held.

Complete a two player challenge game and continuously sweep the Analog Stick in a clockwise Full-Circle. This will make the right front wheel of the losing player's vehicle fall off after the car rotates about four times.

Win the "Cruise The USA" mode with the difficulty set to 1, 3 or 5. Now the car used to win the race will be selectable in a new color. The alternate cars are faster then the original version. To select the alternate colors, press C-Up. Note: This also works with the three hidden vehicles.

Normally in two player mode, only one of the players can get an upgrade for their car. To upgrade both players, race to the Washington D.C., quit, and save the game. Then reset the Nintendo 64 ,and have player one beat the Washington D.C. course. Reset the Nintendo 64 again, and have player two beat the same course. Now both players will now have their cars upgraded.