Another cool think-big engineering solution from the turn-of-the-century

Engineers still like to play around with the question of how you might get passengers on and off of a train without having it stop. Most of the ideas I've heard suggested (none of which appear to be practical) involve transferring cars from a second train.

For something considerably more novel, consider this proposal from the 1905/03/18 issue of Scientific American for an endless loop train that never has to stop at any point.