This was pretty fun, but some things were unnecessarily difficult I think.. For example, at the start of a level, there is no way to tell where you're supposed to be going. The overview shown when you crash was really helpful though and helped me understand the level. Maybe show the overview before letting the player play?
Also, it was pretty much impossible to judge how much room I had left behind the truck which led to crash after crash which was frustrating!
The voice over was pretty funny, but I ignored it completely.