Wait for the green light, then use Space bar to accelerate and Up and Down arrow keys to shift through the gears.
You'll need to get your timing right to run the 1/4 mile Santa Pod drag strip in the shortest time possible.
Total time is made up of Reaction Time to the lights and Elapsed Time of the run.
See if you can beat the top time on the scoreboard.
If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).