Stunning miniature, Terry - the build quality appears flawless!!! Must admit I feel odd seeing one of your creations WITHOUT a lightbar or manure in the back, tho....
It seems I vaguely remember that someone did produce a 1/20th scale Winnebago in the seventies. I have seen it offered as a kit and builtup on "that other auction site" occasionally - the maker was not one of the Little 3 model companies. Be forewarned - I don't think they go for less than three figures!!!