As for the zombies I have never undosrteod why people don't use harvesters on them. Because Zombie movies set in the middle of nowhere, America, would be boring. As in, Little House On The Prairie boring. Albert..bring in some firewood, and clear the immediate area of the unholy menace. Yes sir! Next scene: boring shit about some cow having a difficult birth. A zombie was taken out, due to ambling close enough to the cow to disturb her labor.