Cool game and concept. My record is 77 :) I enjoyed game, but there's some problems:
1. Building can spawn in you, It could happen on turns.
2. In some places you can fall of the track
Also it would be nice if there was restart button after death.
Overall I enjoyed game, it is fun. It pretty fast gets boring, but you can't make game fun all the time in 2 days :) Good work and good luck in your projects!