If the control of the truck were to fail over to a remote-control system, like those used by the military's UAV's, that particular situation could be mitigated

If the control of the truck were to fail over to a remote-control system, like those used by the military's UAV's, that particular situation could be mitigated at least as well as it could by a driver on-site (can't hold a remote driver at gunpoint). Nobody holds up railroads today because of the legal/law-enforcement system. If Amazon/Roadway's trucks had a bunch of HD video and lidar images of suspects, Law-enforcement would be off to a great start. Furthermore, the loss to theft need only be less than the cost of maintaining a huge fleet of human drivers. The really big challenge, IMHO, is finding a fulfilling new career for the people that these systems might displace.