I'm not sure how it works. Many private parking garages here are relatively automated, though——you pull your car into an elevator, get out, walk outside, type in a code, the doors close, and your car disappears up the lift until you need it again. I'm certain that they will eventually work out a system for charging them all, but today the adoption of EV cars is probably not sufficient to warrant it. People are generally pretty ridiculously considerate of others here, so I can see them scheduling charging time and sticking to it.