I need a practical vehicle that does not exist. AWD, good mpg and a bed since a car is useless to me. Does not exist I kno. But cut the roof off a Subaru outback wagon, cut and section a small truck bed fenderwells and floor. Figure out a rear window and cab wall that looks right and its there.. In theory.... Will it fold up from no structure, or would the bed structure and rear cab wall be sufficient? I want it to have 500 lbs capacity, which is conservative as the cars rated for 900 lbs, so 400 for driver and passanger. Figuring it will be lighter without rear top and interiors