OK -- now I get it. MY PLAN -- 20+ yrs ago....I had sole custody of 3 kids for 10 yrs and my plan was to be single, 45, no kids, and move to the country. Picture this. Metal building, on far right is a large overhead door (for backing RV trailer into) just to the left is a personnel door. If you walk in the door, on the left there is a sheet rock wall running the full depth of the building. To the right is the RV. In between is a rug on the concrete floor with a living area, maybe a kitchenette, bed & bath are in the RV. Back outside....to the far left of the building is another overhead door -- where you park the truck. You could have an opener on that door, pull the truck in, and walk through the sheetrock wall to living quarters. Beauty of this layout is...you don't have to put anything in the slab. All utilities can run through the wall. Tear out the sheetrock wall, pull out the RV, and you have a shop. My plan went south when after 10 yrs of single life I met and married a woman with 2 little girls, at the same time my job went on the delete list so had to move to a new job ...whole life changed in a matter of 6 months.