Earlier quoted context omitted.
Don't fall on the trap of self-driving cars will make our lives better. They won't. Building cities for people first is what will improve our lives. Watch: How Self-Driving Cars will Destroy Cities (and what to do about it) https://www.youtube.com/watch?v=040ejWnFkj0
The city where I live—Yokohama—is very different in layout and density from the U.S. cities shown in that video. My neighborhood consists of many small plots of land, each with a different owner, separated by narrow streets. Unless it all gets wiped out by a tsunami, it’s never going to be rebuilt or have its layout changed—the landowners, many of whom live on their plots of land, would not stand for it. My house is…
While it is "easy" (and, I think, proper) to build new areas of cities to be walkable at some point in the future, the fact remains that today cities already exist as they stand and many of them may not be very walkable.
Even in already-walkable cities, it is important to consider the fact that all of us will eventually (hopefully!) live long enough to be considered old.
Looking forward to when I myself may become old, I think I'll still like to be able to get from A to B (and back) with a minimum of fuss and at a time of my choosing.
So it is my hope that by the time I reach that point, the world will have options for me and other old people that are better than old people have today.
And that's just me, some day.
But many people are old right now. They can benefit from things like self-driving cars right now, even in walkable cities.