It is clear that the technology is either ready now, or will be very soon. The problem is that most people in our society have no concept of the degree to which self-driving cars will impact our lives, in ways that are so much more than just transportation.
For people under 30, who are much more attached to their phones, and social apps, than their cars, that should not be difficult.
The problem lies with our law-makers, many of whom are still pushing for coal-powered locomotives.
I wrote about that last fall here last fall.