[sesqu]

The best thing about public transport in cities is that you don't need parking space. Hunting for parking space can easily take more time than you save by getting directly to your destination, and public parking can be quite expensive.

That said, many offices have reserved parking, which fixes this - though that real estate is valuable.

[danssig]

Well if my idea comes to fruition the automatic car service would only need parking for "overflow" cars when not in use. Some percentage of the system would always be in use so the cars would only not be in use when they were being repaired/upgraded/whatever.