Plow down the zombies in your big bus and shoot them(this is automatically) so you can make it to your destination! After finally reaching that chopper you run out of fuel because of all the extra weight from the zombies hanging on. Now you will need to go clear across the United States to reach the 'thing' that you must find! Unlock and upgrade new vehicles all the way across the great states as you plow through zombies and earn big bucks with the car, hummer and school bus. Only downfall to this game is that it is only three levels so it feels very short. It's basically just made to promote the iPad and iPhone app of the game which is really cool though and you should definitely get it. Enjoy running over zombies!