Get Zombie Driver HD for Free

Zombie Driver HD is currently free-to-own on Steam for anyone who picks up their copy between now and midday tomorrow (thanks Free Steam Keys via Ant). Here's a bit on this chance to run down hoards of the undead:
Insane mix of cars, speed, explosions, blood and zombies! Fight through an epic narrative campaign or test yourself in the Slaughter and Blood Race modes. Engage huge bosses, save survivors, drive crazy vehicles such as a bulldozer, fire truck or even a tank and smash everything in your way. Take part in the Blood Race tournament - chase other cars and take them down without mercy on brutal racing tracks. Jump into the Slaughter mode and survive as long as possible on specially crafted arenas.