Store vehicle Audi 80 B4 needs your help

I need your advice/help what’s best. I still have an Audi 80 B4 year 1994 that I don’t want to sell (almost everything else original), at the moment he is driven by an acquaintance of the famiele. All costs run over me. Now this acquaintance has caused a so-called parking lot damage (shrink on the bumper of the other vehicle nothing big) , which is not so bad as I am very far down in my percent. (so no price implications) I drive for my part e a new Audi A6. Now I’m thinking about whether I don’t just moth the Audi 80 and leave it standing (in a hall) until he gets an H license plate. Now my question, how do you do something like this with this vehicle during a complete decommissioning, or would it be better to leave it mottled and move it every now and then. I would be grateful for the answers that lead to the decision-making.