Rails and train cars were relatively old technology. By the time the steam locomotive was invented, there were already horse drawn trains [1]. So your example i

Rails and train cars were relatively old technology. By the time the steam locomotive was invented, there were already horse drawn trains [1]. So your example is not quite backed by history. [1] https://en.m.wikipedia.org/wiki/List_of_horse-drawn_railways https://en.m.wikipedia.org/wiki/List_of_horse-drawn_railways