Yeah, that’s the ticket. Leave it in the car so that it becomes a stolen item. Think about it, if you are in a festival for hours how long could the gun be in the hands of a criminal? At least when it is on you and it is taken, you will know when it happens and with all those cops around your shouts, etc. will prompt a quick response and recovery of the gun. Use some common sense when you post.
I suppose someone could break into my house, and steal things from there when I’m not home, or I could get shot from a distance, and then have someone come take my weapon, or someone could commit a crime with another kind of weapon, etc. As I said, life is full of first events, and we make our calls, as we see fit.