There are 8 laps. You have to finish each track as the winner to advance to the next level.
To make your car go faster you can use turbo. You have to hold the turbo key (not only to press it). While holding the turbo key your car will go faster. Below the speed indicator, you will see the status of turbo energy. When you are out of energy, you have to wait until it refills. After that, you can use it again.
Use arrow keys to control and SPACE to turbo