Hot Wheels: Turbo Racing cheats and cheat codes for Nintendo 64

Go to the main menu and press the following button combination:

Midnight race: C-Up, C-Up, C-Down, C-Down, C-Left, C-Right, C-Left, C-Right. 
Reversed tracks: Z, R, Z, Z, R, Z, Z.
Stealth mode: C-Left, Z, Z, C-Up, C-Left, R, C-Down, C-Up.
Unlimited turbos: C-Right, Z, C-Up, C-Down, R, C-Left, Z, C-Right. 
Unlock TowJam car: C-Up, C-Down, Z, R, C-Left, C-Right, C-Up, C-Down. 
Wire frame: C-Up, Z, C-Down, C-Left, C-Up, Z, C-Down, C-Left. 

Bonus cars and tracks
Win 1st palce on the Hot Wheels Cup or enter the following password:
99T8DTY8VD*D7BDDDDDD2

More bonus cars
Enter the following password: 9PTNPTFN6P*NMQPPNPPPL

Unlocka all tracks and cars:
Enter the following password:
*WYVW2LVDW*VTXWWVWWWF
or
*WYVVZCVDV*VTXVVVVVVN
or
*WYZKZ1VDD
or
OTX1TRGHSV

NOte: Replace the * to SPACE