KEY POINTS
  • An Aeva unit could cost as little as a few hundred dollars.
  • The start-up is working with a few automakers to add the technology to future vehicles.

Silicon Valley start-up Aeva has been secretive about the technology it's been building to help self-driving cars understand what's happening around them.

On Monday, the company finally revealed its creation: a system that detects velocity, depth and reflectivity more than 200 meters away, without using a ton of power — in a unit that's the size of a tissue box.