@sean The Autonomous vehicle is coming, here in Michigan the companies pursuing this concept have built their own test "City" in Ann Arbor for scaling and research. I am able to sit in my living room and literally watch cars go by with the tech. mounted to the roof (the radar unit I guess).
Trucking industry worldwide is exploring "Platooning" which is combining 3-4 tractor trailer units together all acting off of the front unit. A "driver" is still required to be present in each unit however control is handled by the lead vehicle.