Waymo is 99% of the way to self-driving cars. The last 1% is the hardest
Joel Johnson laughs nervously from the backseat when his self-driving taxi stops in the middle of a busy road in suburban Phoenix. The car, operated by autonomous vehicle pioneer Waymo, has encountered a row of traffic cones in a construction zone, and won’t move. “Go around, man,” Johnson says as he gestures to the drivers honking behind him.