@hightor,
The reality is the people who don't care about displaced workers are us. We can say we hate to see all the Mom and Pop places put out of business by big box stores and the Internet, but come Christmas, everyone is flooding Amazon and Best Buy. Self-driving will put a lot of drivers out of a job, but it will also lower the cost of transportation by a lot meaning that everything in the grocery stores will go down in cost. It will reduce the demand for gas, resulting in lower prices at the pump and less need for gas for everyday folks. For those people not out of a job, it will lower their costs of living in just about every category. There are some out there who will say they are willing to pay higher costs, but most will feel sorry for the truck drivers and use their extra money for ice cream.
