W or Up Arrow Key to accelerate, Left Arrow key or A to go left, and Right Arrow Key or D to go right. Press space to change with the top speed of the car and the handling of the car.
All by me. You can reach the maximum amount of clones if you drive on the grass enough. To make the smallest turns, set Top Speed to 4 and Handling to 10. For me, it's easiest to go around the track with 6 on handling and 6 on Top Speed.