The New York Times reports that Daimler has successfully tested the Future Truck 2025 at speeds of 85 kilometers or 52 miles per hour. This particular autonomous vehicle still requires the presence of a driver for certain operations including starting and merging into traffic. However it is a step along the way to fully robotic vehicles for the shipping industry. There are around 3.5 million truck drivers in The United States and approximately 225,000 in Canada. 1
Here is the promo video from Daimler.