Well, back to the origins of the topic, cameras in a train car. At York, in (about) 1994, Neil Young had his portable layout there. All of his engines had forward facing "invisible" cameras in them. There were many screens in the tent, so one could watch as the trains went around his well detailed layout.
You could actually purchase a video that included a view of yourself, as you watched the motion of the trains!
The look was simply awesome!
