The art direction and the music are really good. It could have been a little bit better if there were some more distinguishable areas (maybe the color pallete on each zone can be slightly different to show the zones) or landmarks in the track to add variation and to know where you are.
The constant width is a little bit underwhelming, especially on sharp turns, if there were more broad zones, I think the tighter ones could add more tension. The camera sometimes works against you, especially on turns when you are going up after going down, the camera doesn't catch up and you don't know where the track is headed. Same with the peaks where you go quickly from going up to down, the camera takes a moment to catch up and everytime i get into those zones, I crash.
You did a good job on the jam, congrats!