Um. City buses, trains, subways? Carpooling? Don’t we already share someone else’s schedule and ride with strangers? And in theory, we could do what we do with our kids: use a bus with a special route that goes to the nearest transport station.
I do agree about the fact that the writer has not accounted for the economic fallout (like, what _are_ those doctors and nurses supposed to do for work?) On the other hand, if the shape and scope of cities change drastically in response, there will be a lot of work available in architecture and construction, among other professions.