Yes, that's what it is. The Granit was available with a factory-built streamline body. It was advertised as "Die neue Linie" (The new line), but it can't have been a success, because there are hardly any pictures of this version around. It was probably more expensive than the standard model without offering any advantages other than modern looks, as Phänomen trucks usually weren't used for longer distances at high speeds turning the improved aerodynamics into earned value.
