> so what if every time you approach a stop the front car detaches from the train and shifts to the stop and a car at the station accelerates and attaches to th

> so what if every time you approach a stop the front car detaches from the train and shifts to the stop and a car at the station accelerates and attaches to the front of the train (or vice versa), all without the train ever stopping? Has been done historically: https://en.wikipedia.org/wiki/Slip_coach https://en.wikipedia.org/wiki/Slip_coach