In the beginning of 1930th the car producers started to search other ways to build a car. It was mainly because of the technical progress concerning rolling machines. Porsche was a designer who had build several different car models for producers like Steyr Tatra, NSU, Zündapp. He started at Volkswagen. There he started his own small design office. Another known name is Hans Ledvinka. Ferd. Porsche worked now and then at Mercedes Benz. For the car in picture with rear engine is Hans Nibel known. Edmund Rumpler had had made a curious car with rear engine called Tropfen-Auto. This was a name which was used by Mercedes for a racing car "Tropfen-Wagen".
The car in picture had different types of 4 cyl engines 1300 cc, 1500 ,cc och 1700 cc.
and also a 3 cylinder diesel. The diesel was a failure and only test cars were produced. The rear end had swing axles and the gearbox was placed in front of the engine. This was a typical Porsche solution and it was used for all Volkswagen test cars. See Autostadt. VW-history.
Despite it had for the time a good roadability it had bad selling and the model was ceased. after 1936/37.