[babyblueoval]

yeah, I was thinking of one of the simpler versions where you back in the garage, raise the front of the top and slide a 2x4 under it, then raise the back and do the same, then just drive out from under. With air suspension it'd be even easier, air the truck up, lift the top on the supports, then air the truck out and drive out easily. To put it back on just back under it and reverse the order. Nowhere near as high tech as yours but simple and cheap.
Someone on here did it that way, some one also did it the way you're thinking. They both work.