This is nice for car owners, but public transit users will continue to get the shaft for another 20 years. The only innovations in transit seem to be of the mode of fuel. It's still too expensive and politically inconvenient to build out new train service, and electrified city buses don't seem to be getting any cheaper. Unless something changes, we're going to end up with a public-subsidized automatic-pilot public transit network of Uber cars.
Moving individual people is insanely inefficient compared to moving large numbers of them. It would completely immobilize roads used for daily commuting, and it would take much much longer, not to mention it would take so many cars as to require massive investment in additional vehicles. I mentioned it as a sort of unlikely worst case scenario; buses will stay in some form or another for the forseeable future. They just won't get any better.
Having a robot car pick me up at my house and drop me off at work is far more efficient than me having to drive to a train station, wait for the train, switch to the subway, wait for that train, then walk to work. It could be picking up an dropping off people on the way, it doesn't have to be a solo vehicle. If you think about congestion as the number of people in transit at any point, this should reduce it.
It would also reduce concentration because you wouldn't have people clustering homes and work around transit stations, it would be more spread out.
