LTNman, I suspect the cable is a continuous loop and thus the two separate train units are not independent of each other? If so then if one breaks then they are surely both out of action? Dopplmeyer is, as I understand it, primarily a ski lift company. I suspect one ‘train’ is assisted on it’s ascent (terminal bound) up the hill by the gravity of the descending (Parkway station bound) cabled ‘train.’ This is a system that Dopplmeyer uses frequently with various funicular railways throughout the world, indeed I suspect many would call this DART project a funicular rather than a train?