Deep in the wilderness, a semi truck cab carves a path through the snow, slowing as it approaches a one-lane bridge. …The situation would be anxiety-inducing for a human, but this truck cab is driving itself. It’s using a system developed by NuPort Robotics, a Toronto-based autonomous-driving startup. It’s just a test run—but one day, Canada’s north could be criss-crossed with self-driving trucks hauling huge loads on dangerous roads. …Seasonal logging firms struggle to compete with oil and mining companies for trained drivers. …The company has been in talks with several forestry companies to try and drum up more business. They’re looking for help, he said, to relieve driver fatigue, determine which complicated maneuvers can be automated, and which, like strapping logs to trucks, must be done by humans. NuPort is also testing how the technology reacts to unexpected issues like a log falling into the road.