Tesla offers a $10,000 feature called Full Self-Driving Capability. It includes futuristic goodies like the ability to summon the car via app in a parking lot, and it can detect and react to traffic lights and stop signs. FSD, as Tesla enthusiasts call it, includes Autopilot, a feature that "automatically" drives on highways, changing lanes, keeping a car within its lane and at a consistent distance from other vehicles. But even people who shell out for Full Self-Driving don't own a self-driving car, and vehicles with Autopilot can't automatically pilot themselves. Lengthy blocks of text in Tesla owners' manuals describe when, where, and how the features should be used: by a fully attentive driver who is holding the steering wheel and is "mindful of road conditions and surrounding traffic."