I go with justin on a proper bug out vehicle. two bikes carries me, the wife, two kids , enough fuel to get 2000 miles and enough food and water to last the distance (oh and enables me to carry two rifles, two shotguns and a couple of handguns and their supporting ammo
on other vehicles though....there are many 4x4 'cars' that perform as well on a dirt track as many a full sized pick up....I am thinking specifically of the Isuzu MU and Volvo XC70. There are not 'off road vehicles like my landrover of the more commonly chosen land cruiser, but they last better on bumpy, narrow dirt roads than the full size isuzu 3l 4x4 pick up or Volvo XC90,Toyota Hilux 4X4, Toyota RAV 4 or Ford F250, The li9ttle MU (I have seen it branded as the 'Wizard' in other parts of the world) holds up on some really rough terrain. My Wife had one before the kiddies started making accesss to the rear seats an issue and the bried who swoped us his Nissan twin cab for it takes it places that I am surprised at...there are options out there, but economy and smaller always beats bigger if you have to go far. And pulling a trailer is always a better choice than putting stuff in the back. You can park the trailer, put a tent on top . winch trailer up steep hill seperately to truck etc...