Over the holiday day weekend I did a lot of driving in a loaner Tesla (we have ordered one ourselves but it is, ahem, delayed). Well, actually, the car did a lot of the driving. I made extensive use of “Autopilot” features, including the smart cruise control and the autosteering. New cars by other automotive brands have similar capabilities. Long before getting to fully autonomous cars, I am blown away by how immediately transformative this experience is for highway driving. For me there were...