For a demo this is good, but could use some work before it reveals it's final form. Firstly, the timer and lap counter overlays the track, which is distracting and takes attention from what should be focused on: the car and racetrack. Also, a graphics/aesthetics revamp could really help this game succeed. Finally, hitting the outside seems a bit too punishing, and will be especially difficult to deal with if other racers are introduced. Maybe a simple slowdown(really, really slow) can make it less brutal on your time, while still preventing cheating. Or maybe some grass near the edges of the track that slows the car down, but some walls in the center that function just like the grass currently does.