Or maybe we should hold off on paving over the Earth's surface, and recognize that cars are dangerous, noisy, state-subsidized machines that have created an ugly culture full of strip malls, big box stores, and drive thru fast food chains. We could also realize that they are literal weapons and one of the top choices for terrorists. A fleet of them if networked and self-driving could set off a major terrorist incident.

We can make them pollute less, we can eliminate the cost and burden of ownership, we can reduce the safety problems by eliminating human drivers.

But other issues involve basic values of what kind of world we want to live in, and a better car won't fix these problems.