Geeze. Who hasn't done that?
Years ago I lived in Mississippi. Great place BTW. The people are really friendly. Many pickups had a rack with a shotgun and a rifle. Can you imagine someone with PA plates tailgating one of those?
Mississippi was the only state I saw road signs saying “No Shooting From Highway” or words to that effect. A lot of folks pulled over for target practice. The state just wanted you to pull waaay over and not just shoot from the shoulder.
Here in WV you have to have rifles and shotguns cased when in the vehicle. What a PITA.