Here's an ideal evacuation vehicle:
http://www.dallasdrivers.org/albums/album64/IM001564.jpg
http://www.dallasdrivers.org/albums/album64/IM001599.jpg
Who needs a road?
The other ideal kind of vehicle is a motorcycle, if you are confined to urban areas and the concrete jungle.
Spktyr....Just bought a sweet 1989 Grand Wagoneer from the original owner. As others are buying coffins on wheels to save on gas....I am purchasing what will get me and mine over hill and dale. These Woodies are tanks!