https://apnews.com/0dcbf4191b5e45e6a3e7b6a87072d8ee

TOKYO (AP) — Technology companies are racing to develop ultra-precise digital maps that can guide self-driving cars within inches of where they should be — a hurdle the industry needs to clear if it hopes to deliver on its promise of widespread use of driverless vehicles.

Japan's government is backing a three-dimensional mapping system developed by Mitsubishi Electric Corp. that includes a wealth of details such as trees and pedestrians. It promises to be off by no more than 25 centimeters (9.8 inches).