Whatsit ? I don't know !
Reminds me of a Rosengart Supertrahuit, but I am sure it is not one... :P
An interesting thing is that the picture was taken in Germany, Austria or Switzerland, but the car is probably from another country, because it seems to have a CD license plate (Corps Diplomatique).
Bigger picture guys :
So it is not CD, but LU for the Swiss canton of Luzern (Lucerne). The car next to it carries SZ for Schwyz on its plate.
The steering wheel is huge, so I think it´s a prewar chassis with a revamped body (design ca. 1947-1952).
Quite likely it is some big french car like a Delage, Hotchkiss, Delahaye...?
Perhaps a Studebaker badge ?