Traffic Lights with four lights
Autonomous vehicles are stupid — so an engineer has figured out a way to make streets smarter.

Someday, maybe, you'll be driving like usual, and you'll stop at a red light, as usual. You'll take the opportunity to sneak a peek at the car next to you, and the guy behind that wheel — if there's a wheel at all — will be watching Netflix. His car will be driving itself, as will many of the others around you. It'll be a bumper-to-bumper jumble of robots and humans.