When we were looking at MH's we considered a 5th wheel but to my knowledge none are capable of hauling a 2100# car in the rear. The are toy haulers, 4 trackers, motorcycles, etc. Our neighbor sells non motorized trailers and he couldn't find one that would haul a car in the rear. Maybe you can find something different.
With the MH you have your own bed and you don't have to get out of your vehicle to go pee
btw: Nice rig lamaluv.