Here is a short documentation how the Cable Cars are turned on the endpoint Powell and Market Street. There is a huge wooden turntable. The Cable Car stops right in front of them. Then it's pulled on it and manually turned by a worker. There's always a crowd watching or queueing up to enter the car, though today there were only a few tourists.
On Market Street, right around the corner from the Cable Car turntable we came across some streetdancers. It wasn't easy to shoot pictures from behind the surrounding crowd, but I guess it's enough to give an impression.