The only reference I could find was they are a bearing manufacturer (who obviously also made some cars) & now owned by one of the larger bearing manufacturers, but can’t recall which one now. I imagine the owner was nearby busy answering questions all day but I was only able to spend about 2hrs & try to see the whole show.
If we are looking for challenges, how about this one… Seems to be some sort of military vehicle, wearing an Auto Union badge on the front. It was parked next to a DKW.