Well, I started out with a Tatra connection which did not work, although the designer did work with Tatra before the whole VW story which has spawned many books and a large lawsuit.
To try to help Norman out, and I am totally lost after hours of looking at the whole story of Ganz, Standard , Gutbrod and Butz, it looks to me to be
a Taxi, a Limousine or a Lieferwagen.
Go for it Norman!!!!!