Think of how so many backpackers fend for themselves for a much longer duration. You're not going to carry a full camp stove...just a hiking stove. Go to any sporting goods/out door store (think ProBass) and you can see the lightweigth/efficient/SMALL items.
Don't forget to have a vehicle that is capable of bugging out - the advantage of some 4WD SUV and truck types.
Most SUVs are not offroad capable and therefore are not suitable. If you are single, consider a dual-purpose or offroad motorcycle.