Demand isn't slowing down for logistics, but the ability to recruit drivers is. Makes sense and it's already legal in Nevada (wired):
The truck in question is the Freightliner Inspiration, a teched-up version of the Daimler 18-wheeler sold around the world. And according to Daimler, which owns Mercedes-Benz, it will make long-haul road transportation safer, cheaper, and better for the planet.
The Freightliner Inspiration offers a rather limited version of autonomy: It will take control only on the highway, maintaining a safe distance from other vehicles and staying in its lane. It won’t pass slower vehicles on its own. If the truck encounters a situation it can’t confidently handle, like heavy snow that covers lane lines, it will alert the human that it’s time for him to take over, via beeps and icons in the dashboard. If the driver doesn’t respond within about five seconds, the truck will slow down gradually, then stop.
In hardware terms, the truck isn’t much different from the latest trucks and passenger cars Daimler is putting on the road. A stereoscopic camera reads lane lines. Short and long range radar scan the road up to 800 feet ahead for obstacles. No sensors face backward, because they’re not needed. There’s no vehicle-to-vehicle communication, no LIDaR. The software algorithms are adjusted versions of those developed for use in Mercedes-Benz’s autonomous vehicles.