i think it's a great concept, and i cant see any technical faults. but there could be more levels, bigger sized grids, secrets etc. and the graphics could be improved.
handbrake doesnt work, the steering is rubbish, and the reverse steering is wrong. if you hit a cone you get disqualified yet with all the rubbish steering and braking its nearly impossible not to hit them. and it should be disqualified not DNF if you hit a cone, DNF is did not finish meaning your car broke down or something, not disqualified
there are so many ways to cheat, you can either right click, move your mouse quickly through thin walls or press tab then enter whilst your mouse is over where the goal is then you win straight away