Much of the footage the press and the public have been provided shows radar-equipped autonomous vehicles traversing sunny California highways. Cute. But much of the United States, and the world, is a mess of mountains, darkness, sleet, ice, and gravel. So Ford and other outfits are putting their driverless vehicles into tougher terrains. Most recently that includes a test under cover of darkness at Ford's Arizona proving grounds. While many systems use stereo cameras that require light to function, Ford is testing a car with LiDAR, which determines its location and trajectory using infrared laser beams at the rate of 2.8 million pulses-per-second. In conjunction with a database of 3D maps, the moderately unsettling Fusion was able to do a complete (and swift!) racetrack lap in near-total darkness. Like electronic stability control before it, this technology does better than replicate human ability—it supersedes it.