Crazy Canuck:
Select car attack and choose stage 8 in mirror mode. Defeat the car to unlock Crazy Canuck.

00-Agent:
Note: Two players are required to unlock this car. Select two player mode and the team mode. Choose three teams and pick stage 7 or 8. Win first and second place to unlock 00-Agent.

Red Shirt Rage:
Win first place in stage 2 revolution with a reversed track.

Z-class:
Complete every stage in first place to receive all eight gold trophies and unlock Z-class. The Z-class is the fastest class in the game. Also, you can now choose any class type except the classes below the intended class type.

Ultra 64:
Win all eight gold trophies. Then, complete every stage in first place on Z-class to get all eight platinum trophies. Wait for the credits to end, then Ultra 64 will be available in your garage.

Car preview:
Press C-Up, C-Down, C-Left, or C-Down at the car selection screen or trophy screen to change the view and rotate the cars.

Motion blurring:
Press C-Left during an instant replay to add a motion blur effect.

Reversed track:
Start the game without loading or saving and select Grand Prix mode. Keep advancing through the menus until you reach the first course. Select and play that course. When the race begins, immediately turn around and drive into the concrete wall. Your car will keep bouncing off the wall, but keep driving that way that until you go through it. If done correctly everything in the course will be now be reversed, including the signs, track, and name on your car.

Bonus cars and tracks:
Go to the load and save screen from the main menu. Open any file, then choose "Quick Play" at the main menu. Immediately after starting, turn around and crash through the wall. At first you will bounce a bit, but then you will get through. A crowd will start clapping. The entire course will be backwards. Finish the race. At the end choose to retire. Go to the second option on the main menu to access three new courses and three new cars.

Golf Caddy car:
Unlock the reversed track and finish it in first place. You can also obtain the golf caddy car using a loaded or saved game by completing the first race of the second stage in reverse. The golf caddy car will then become one of you saved game cars.

Blinky ghost car:
Drive 99 laps in free run in time attack mode on any track.

Pooka:
Select time attack mode and choose stage 7 or 8. Select set record. Break the record to unlock Pooka.