"An Erlkönig?
I saw this car in Heidelberg. It caught my eye mainly because the roof had green windows at the front, the sides and the rear like coaches have. In the middle of the roof a sliding roof was installed. There was no name or emblem on the car. Is it a coachbuilt body or an Erlkönig?
Jürgen Kühneweg from Frankfurt-Zeilsheim
It is not an Erlkönig, but custombuilt car with engine and chassis from the DKW Meisterklasse. It belongs to a teacher at the academy of coachbuilding and automotive engineering at the school for master craftsmen in Kaiserslautern.
The editor"
In German, a disguised prototype of a car is called Erlkönig, named after a well known poem by Johann Wolfgang von Goethe which begins with the line "Wer reitet so spät durch Nacht und Wind" (Who is riding so late through night and wind). The English term would be development mule.