My biggest problem with this is probably the fact that for a web game, it's too heavy. Your game needs to target the IGPU crowd if you're releasing a web game IMO. And you could probably do that here while keeping most of the visuals in tact. There should be a resolution slider, or at least an option to turn off post process and antialiasing under graphics. A good first impression isn't having it run at like 5fps in the main menu.
The music's good. The visuals just look like rainbow road, however. It's not crazy original, but it looks fine.
I don't think there's a point for this game to lock your cursor considering it doesn't use it at all, though. I think it's okay.