Mutant Roadkill is a free new Android game in the Google Play store... you'll like it if you like Zombie Highway.
Game Description:
Race through an apocalyptic wasteland overrun with mutants and other hazards! In this free game Mutant Roadkill, race through an apocalyptic wasteland overrun with mutants and other hazards! Blast your way through city ruins as you try to escape a world overrun with danger. Drive as far as you can and compete against the world! Can you make it out alive?
Mutant Roadkill Video Review
http://www.youtube.com/watch?v=N5fu9zGkJ7s