It have seen photos that back in the mid/late 30's there was a coupe that had a hitch mounted in the trunk (rumble seat) this was connected to a streamlined 5W type RV. I can't remember where I saw the pictures though.
It was probably custom built and not a mass produced product for the consumer
2005 Dodge, 2500, auto, 2wd. Pac brake PRXB. CB, Max Brake Brake Controller, Rhino Lining, Aero 60 gal. replacement tank.
1998 Hitchhiker ll, mod#31RLBGBW, RBW L'tl Rocker Hitch, Generac NP50 G generator