Very nice game

The progression could have been faster, as ot is the game can be boring (if you do not want to spend too much real dollars)
Some elements are missing to be a killing game:
* goals / mission that are more "material", like catch a specific object on the road
* story telling with mid term goals
* more tracks (only desert and city)

Invisible.001 about Mutant Roadkill, v1.1.1