I think you're way overstating it. It's really improved city planning and public transit that will really shape our future, not self driving cars. You'll see some improvement in transit times when everyone subscribes to it. Who knows when that will be.
I said "shape" - not "improve." If you believe improved city planning and better public transit will shape our future, you must be an optimist living in San Francisco. Oh wait. . .
But seriously - while you wait for your fellow San Franciscans to pull their anti-development heads out of their _______ and solve the housing crisis, the tech companies are building cars which will make hundreds of thousands of people more happy to live in the suburbs. Self driving cars do not have the problem of needing society to agree on public transport solutions and to built more logical cities.
Self driving cars work with what we have now. Is that the best way to plan our future? No - I agree with you it is not. I do however think that the autonomous cars will have a greater impact because they do not have the momentum problem of getting citizens and politicians to agree on change and make tough decisions.
I predict an explosion of suburbia bigger than what we have now - such as the Inland Empire of Southern California. I already know people who drive two hours to afford a house. There will be 10 more for each of them that exist now when you can push the button and nap in the car. And that day is coming very soon.