Go to Options then Bonus Codes. Enter the following cheat codes.

Effect:                   Cheat Code:
Alternate Car Handling    VIBAKH
Get All Cars              XKIMCF 
Get All Tracks            TMYTKO or QTRIKX
No Damage                 IHHBIV or OATRYU
Pro Race Driver Tracks    LQJFFA
Race As The HRT Team      YOUNGLIONS