Yeah, I'm totally wit Hubbub on this one.
Transportation = Weapon
Transportation = Easy Access to Food
Transportation = Easy Access to Water
Transportation = Easy Access to personal, man portable weapons you can carry with you
Transportation = Electricity
Transportation = Quick Egress/Ingress to Areas of Interest
Transportation = Access to Easy further upgrade of better transportation (Get on a bike, drive around find a Car/Get in a car, drive around, find a pickup/get in a pickup, drive around find a Semi)
Let me stress the first one again TRANSPORATION = WEAPON. I love how in these Zombie movies the characters are so obsessed with finding a firearm. Screw that. A far more destructive weapon is a Semi truck (unhitched from a load) with meat sauce all over the grill doing donuts in a Mall Parking lot. Tons of Zombies will be attracted to the scene whereupon you start running them down by the dozen. After about 30 minutes of smushy-time, you head back to your safe area and call it a day. You'll have ended up killing many times the number of zombies that you would have been able to kill with a firearm at a greatly reduced risk to yourself. Vehicles are the way to go.