Here are some cheats and tips for the game Racing Jam 2.
Time Trial
To race against time, stand on the brake and clutch before hitting
the Start button to begin a game. Continue holding the pedals down
until the game has begun. If done correctly, you should be the only
car on the track!
Unlock Hidden Cars
On the car select screen move the cursor to the mazdas then hold the
brake down and new cars will be unlocked. Only in the mazda section
are there hidden cars.