As a rule, self-driving car tests tend to be limited to the country where they started. But that's not how people drive -- what happens when your autonomous vehicle crosses the border? Continental and Magna plan to find out. The machines won't be in complete control for the entire route, but they'll use a combination of cameras, lidar and radar to take over when they can, including two key border crossings (the Detroit-Windsor Tunnel and the Blue Water Bridge). This isn't the first autonomous driving-related agreement involving Michigan and Ontario, but it's an important one: it'll explore rules and regulations in addition to usual self-driving data collection.