"...who's plan is to load the RV and go until they get to a good spot and park it."

Fortunately I don't live in hurricane or tornado country and that is exactly my plan should I need to bugout. I have a 19' trailer loaded with 2 weeks of food, water, and gear, and thousands of empty square miles in all directions. If the trailer gets stuck or breaks down, or I need to leave the road, I can always drop the trailer and proceed in my truck or on ATV's.