New technologies such as sonar, radar, and night vision are being used by automakers to help drivers avoid obstacles. Honda has signaled its intention to adopt 3D cameras with a $5 million investment in Canesta. The company makes high-tech chips for a variety of applications. Its 3D camera technology directs light beams outwards, which get bounced back to a camera by any objects in their path. A chip processes the camera's image to generate a 3D picture of the object. A car equipped with this system could let the driver know what's around it, or take specific action to avoid pedestrians. So far this technology is still in the research stage, but hopefully we will see a demonstration at an upcoming car show.
Source: CNET News.com