Super Car Street Challenge Cheats

When you make a car put nothing for brakes it will slow down but not stop

Finish all classes in all championship categories. Then, make a car and enter "Fusshusama" as a name. Enter "Bye Seya" as a team name. -From: erikskis@earthlink.net
Game Shark Codes
Master Code (Must Be On) 0E3C7DF2 1853E59EEE8E727E BCF7C3D2
Unlock Everything [Note] CE5F227A BCA9D171
Note: Save the game with the code enabled, then reload and play the game without the code enabled to progress.

When you are in the design studio, go to the change color screen and quickly press Up, Left, Down, Right, Triangle, Circle, X, Square to unlock some secret colors. You will hear a horn sound to confirm this.
This will not work every time, so be patient and it will eventually happen.

At the vehicle selection screen, rapidly press Up, Up, Down, Down, Left, Right, Left, Right, X, Circle, Select, Start.

If inputed correctly, the ultimate car, Furasshu-sama, will immediately appear on the screen. If you're not fast enough, you'll be taken to another screen upon pressing X.

Beat a championship race with a class C drift car (i.e., Pickster) to unlock the C12.

Go to the car select screen and press Circle, Square, L1, R2, Right, Left, Up