I love the concept of this game. The idea that you have to finish within a given speed range is just superb.
I couldn't get past the second level because I just couldn't see how it could be done with one collision. Are different angle collisions meant to give different amounts of speed? In the first level that seemed to happen, but in the second it always went 40->56, then 56->79.
Maybe it's just me being dum.