Since we've gotten to the bottom of the screen sickness conversation, time to take the cue from the pully delivery and research cable cars!
–First pratical such system installed in San Francisco in 1873
–Cable hauled systems are effective in hilly cities. They don't lose traction because they're not wheel driven. So if the HE does in fact change elevation often, this could be another reasonthis type of system wwas chosen.
–The cars typcially do still have their own braking systems
–Common systems uses "grips" to attach the cars that the moving cable. Historically a manual, but modernly an automated process. These are large, plier–like, clamps that literally grab onto the cable. The motor driving the pulley system runs almost continuously. The gripping has to be done gradually to minimize damage to the cable and the jarring of passengers.