That was in Ireland, only about 8 - 10 years ago. We had a few days trolling for pike on the lough, then a few hours clay pigeon shooting, and then the farmer we were staying with took us round the country lanes/farm tracks in the Land Rover and we shot through the open window.
It was taken as such a normal thing to do over there, with nobody batting an eyelid we were driving round with a 12 bore poking through the window.