First of all, that song is amazing. Also, this is a really neat concept and I think a lot can be done with it. I cannot think of many timed puzzle games, and that's a wonderful idea to have one like this. I think more needs to be done in terms of mechanics if this were to have more than a few extra levels (for example, road intersections and stuff like that), but the mechanics that do exist are solid. Also, I spent way too much time on this :)