It is almost imposable to indintfy who made the Chase for this Vehical type: Uniform Chassis II For heavy Personail vehicles were manufactured by various companys, Skoda, Styer, Mercedes, Phanomen Granit, the Type 40 Include Horch Auto Union, and Ford, the Bodys were built to a standardised from as well depending on the function of the vehical. This type of Vehical pictured is commonly refered to as a "Horch" howeaver , which is not nescessarly entirely corect, the whole deal with german personel vehicals is quiet complex. The Book:
German Personal Vehicals in Wartime by Rehinard Frank Dipl.-Ing is quiet informative.