You are definataly correct about controls being visible.
They keys are just arrow keys, up for throttle, left/right for turning, down for rolling the car. Collect the pellets to get more gas, and try to go as long as you can, Gas is on the right upper corner counting down. Remember to put pedal to the medal! As that is kinda the point.. to go forwards. :D
Hope to see you try again to get bit more out it, I promise you its worth it ;D
Thanks for feedback!