And, I suspect that give a 100 minute drive route now, if self-driving cars lower the bar of being in traffic, that the same commutes will actually get longer with even more traffic.
That to me is the crux of the issue. Self-driving cars are a poor solution to an entirely self-inflicted problem. The only viable long term solution is to reduce commuting.
In regards to world hunger - many of this planet's woes, would be helped by advancements in science, agriculture AND not endlessly having children.
What it doesn't do is satisfy the fantasy of those who live in dense cities that they'll never need to own a car or even learn to drive. But hitting the point where a car can reliably drive itself around a chaotic urban landscape in all sorts of weather conditions by itself is almost certainly a much harder problem.
Autonomous cars are interesting for the trucking industry - for everyday driving, reducing traffic via remote work and smarter city planning is what'll make people happy imho.
I don't mind a 10 minute drive. It's the 100 minute drive in bumper to bumper traffic that makes people dream of self-driving cars. The real answer is not being in that position to begin with.