Pure incidence- but I´ve found it in "Rollerei und Mobil" issue 7/56:
it is a selfbuilt little sports machine that first had a 350ccm MAG engine and later a 12.5 PS 400 ccm Ilo WEGR 2/200 engine.
Parts were used from BMW Dixi, Opel kadett, Opel Olympia, Lloyd etc...
The builder was a certain Mr. Schirdewahn who drove this little thing at various events: