I'm really curious what autonomous cars are going to do to urban planning. The demand for car-fleet services will rise as they become reasonable ways to commute

I'm really curious what autonomous cars are going to do to urban planning. The demand for car-fleet services will rise as they become reasonable ways to commute, but that's not the whole story. Presumably there will be a lot of people who still want to own a car (e.g. for weekend trips), but no longer need to park near their office or a train station. If you have a short commute or predictable schedule, it'd be far easier to just send your car "home", or even pay for remote parking somewhere you don't live and use it like a privately-owned Uber. Great for reducing parking demand, but with the potential to create a weird reverse-commute of empty cars streaming out of cities just after 9:00AM. And on a similar note, there's a possibility of more congestion from circling traffic. "I'm just popping into the store quick, drive around empty until I get back". Exactly what someone with a chauffeur might do today, but cheap and easy. Hell, will we see a HOV-lane-equivalent arise on highways where non-empty cars get priority status? Or a reverse solution, where empty cars are low priority and have to keep right like semis? ...I've completely abandoned your point, but there are so many questions! It's going to be fascinating to see how universal-chauffeur traffic works.