На самом деле это чудо построено на базе VW. Из инета:
"It has a 1200cc VW engine, 24bhp and the coach builder is WR Karosseriebauer J. Kocijan in Vienna. This company spend 2 years of building this RV, finished in 1954. The technology comes from VW. The structure was built in the caravan-style with wood-aluminum frame."