Pretty good
My best time was 3.284, you should make the tracks shorter, or maybe delete the damage factor cause that gets hard, crashing slows you down enough but I almost died near the end, which woulda pissed me off. Anyways you should consider making this into a bigger game, with more tracks, or you could make it so you have to unlock tracks by getting under a certain time, that would be fun, and being able to choose the color of your little car (go-kart?). Anyways good job on this, although the sound was kinda messed up, if you slowed down it would just stop the sound, and if you crashed without accelerating after it repeats the crash sound.