When I saw the image I immediately thought of the "Shuttle" by Chariot (
link to their site). Then I kept reading at the link above and saw they are in fact "Shuttle" trailers of sorts?
I was close to going that route before purchasing
Parkliner #35. BUT what stopped me was that I was unable to find anyone here in Oregon that would insure it and its contents/conversion , (
YMMV,
Thom