M to start plotting out driving course. right and left arrow keys to change direction of driving course. you can press a instead of m to generate it randomly. right arrow key to change car in car selection screen, space to select car in car selection screen. right and left arrows to drive car.
This is an old project I dug up and finished, based on the atari game nighttime driver. https://www.youtube.com/watch?v=AH7iMzEHOxg The rendering algorithm is not perfect, so the track appears to warp as you drive through it.