Neat idea!
Overall I liked the concept. Personally I would recommend having a "track moving" audio that plays when turning and moving and a separate "squeak audio" happen randomly... as it is now the squeak is annoying and happens too much. Some background music might have helped with that. Is there a win state? I feel like I killed all the enemies and that was it... no game over the end or anything of that sort.
Still pretty solid game.