I commute about 1:15:00 each way, each day. I carpool, so I can read my iPad for two hours a day. It certainly helps with the drive time.

But you can do the same on a train or bus already. I think part of why people don't use them as much is because of the inconvenience of working around their schedule, and first and last mile commutes (because the train doesn't go to your office). Networked, driverless cars could play a part in the larger public transport system to alleviate these two points of pain of commuters.

Rush hour crowding on public transport is a big negative. If we embraced more flexible work hours, it would bring about its own efficiencies.