Touch or click on screen to boost the car and to rotate in the air. You wil earn ten coins for a full car spin in the air. Avoid the big turning metal stars. Do not land on those. In order to jump over obstacles boost the acceleraton of the car by a touch or click and hold on the screen. Upgrade the car to handle upcoming levels.
Each turn will last while you have gas left. Gas icons on the track will add gas to your car. The number at the bottom left display the amount of 360 degree rollover in the current race.