Navigating Paris' chaotic streets requires a high level of attentiveness to avoid colliding with another car, a herd of scooters, a pedestrian, or a garbage truck. It's a grueling test for semiautonomous driving technology developed primarily to operate on highways with clearly marked lanes. Footage posted on YouTube shows how a Tesla equipped with Autopilot sees and analyzes the world around it as it drives through the city of lights. As you tour through Paris, your eyes inevitably wander from building to building, checking out the Hausmann-era architecture. You look at fountains, monuments, and the occasional supercar blasting by the other way.