This toy hauler/trailer from Germany is made from molded
fiberglass, though I think there are separate roof/wall/front/back panels.
The
YAT Trailer website is in English though there are some oddities, like the 'rotary toilet' (is that where centrifugal.... nah, I won't go there). €8,000 for the basic model is about $10,000 - but €2,200 for the silver paintwork is $2,800!
Andrew