Alternate jumping
Instead of using [Shif + [Ctrl] for jumps, use [Al + [Ctrl] for a hidden jump worth extra points.

Extra points
Do multiple tricks, then try to land and drive backwards for major trick points. If you get enough, there will be a fireworks display at the end of the practice session.

Getting cars
One way is to hold [Shif + [Ctrl] to do a barrel roll. Another way is get a good stunt. To get the rest of the cars, click on the trophy and at least get to the last race.

Secret track
Enter the practice race screen (with the checkered flags) after unlocking all the tracks. Move the pointer over one of the letter "T"'s in the word "Mattel" on the "Hot Wheels Mattel" screen. Hold the Right Mouse Button to access a 3-D world. You do not have to pick a race -- just click the green arrow and pick your car. Click "Go" and you will be on a bonus track. This procedure must be repeated after the race ends if you wish to do it again.

Cheat mode
Press one of the following keys to activate the corresponding cheat function on a custom track.

Key - Effect
L - Toggle headlights
W - Toggle scenery or almost total darkness
C - Instant crash
[Space] - Use horn