Step 6: vehicles
here are the things you are going to need to get from place to place.
flatbed truck- all terain, and the bed can be used to carry suplies or to shoot while on the go.
a bus- great for carring supplies, large amounts of people, and rely hard for a zombie to get into.
tanker truck- you are going to need a lot of gas to get to a safer location.
Anything rugged, will do you fine.