Damage in the wash road

Hello. I posted a few weeks ago in the MB SLK Forum that my wife drove into a well-known wash road and after she left the car, the car was pushed through the plant, drove off independently at the other end and hit a metal post. Later 3 witnesses indicate that the selector lever was on D. Before she got off, came from the lance… still the hint to put the selector lever on N and noticed: “Oh, they already put it on N. From this Aussa She received mail from her lawyer (covered by RV ADAC, RAC recommended by the ADAC) with the following wording: “You don’t have to prove that you didn’t make a mistake, but what mistakes the washing line operator made” and “even if he was on N before, the change in the lever position would not fall into the responsibility of the washing line operator, but into that of the holder”. However, the engine must not be switched off either. Whoever enters a wash road with these conditions accepts the contract conditions of the wash road operator. In retrospect, the contract can no longer be challenged. I can only recommend every automatic driver to avoid washing roads where the vehicle is to be left with a running engine.