Answer:
I have feet on my head
I don't live within a house nor do I live without. Most will use me when they come in and again when they go out.
I have cities without people forests without trees and oceans without water. What am I?
I go up and down at the same time. Up towards to sky and down towards the ground. What am I?
I cause involuntary movements in your vehicle
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.