Ive noticed that alot of guys that want to go the non trailor route get the cab over trucks, usually diesel. Isnt this a bit excessive? Why not go with the cargo vans with box backs that are really cheap and get relatively good mileage? This is what I would like to get. Even a box on a regular HD truck would work just the same (Silvey, F-series,Ram etc.)So my question is basically, why cabovers?