I know the feeling well. I lost 7 guns out of my trunk in daylight hours about seven years ago at the Burger King I-295 and 301 interchange near JAX. I parked in the rear of the lot in a single space to protect my doors from dents and ended up losing guns instead. I suspect one of the kitchen workers with a tan had a trunk popper for my car as there were no marks on the car. I didn't even know it happened until I stopped in SC for the night. It was a nightmare. Police reports, ATF, Insurance company... Insurance covered the loss and one pistol was recovered and was returned by police once the DA was done with it (was used as evidence in a shooting). I did okay with the claim as two of the guns taken had appreciated quite a bit and I used the money to increase the collection. However, I rather would have not had the experience...interstate no less.