The Italians used to do that regularly at Brennero, but it seems to happen less frequently these days. Maybe the police are the only people who think the train no longer stops at Brennero, as the timetable for this year indicates. But they didn't just get a lot of engines that can run on both AC and DC. No, they still stop for 15 minutes to change the engine, just as before, and the schedule change seems to only mean that you must have an international ticket for the journey. "Seems" because in practice nothing seems to have changed even there,