The overall experience is enjoyable. I really like when the all the parts of the game, like the graphics, controls and gameplay blend in. However, there are several moments I'd like to point out:
1. The checkpoint system would realy help. Even if you lose the score, it's always a challenge to try the maximum speed you can cope with.
2. Although I liked the well-thought through background, a possible change of brightness/color would be nice too. For example, in some moments, the screen could get a bit darker, and the lights are there to help you navigate (corners and edges).
3. As mentioned below (above?), many experience lags. So did I. Surely, there is something that can be done to improve the perfomance.
4. A mute button. Oh, yeah.
5. The game could you some additional challenges. Why not add some horizontal moving obstacles? Smaller obstacles like saw blades or drones might just add a bit of challenge.
Generally, a thoughtful, well-balanced piece of experience. Keep up the good work.