I’ve written about self-driving trucks. (Here’s the first of three articles in a recent series.) And, these are most likely to be the first adopted use of autonomous vehicles. It’s not clear if the tractor (what one calls the “truck” that hauls the trailer) will be autonomous on the highways, only to revert to driver control on the side-streets and within cities- or there will be a leader vehicle (driven by a human), with a series of autonomous vehicles following the instructions of the lead driver.