Suddenly you hear a warning sound, telling you that a vehicle coming down the street ... the car. If a vehicle is present, it will illuminate a warning light in or near the side-view mirror.

Maybe we could cross the street wherever we wanted—because the cars would stop and flow around us. But there’s a dystopian view, too. Self-driving cars, Norton warns, could usher in an ...

Lauren Goode: And you'll see them driving side by side on ... actually the self-driving car wasn't really at fault. There was a human-driven car driving on Market Street in San Francisco.