Waymo's CEO says self-driving cars are 'really close' to being ready for the road — but plenty of ch

Waymo, Google's self-driving car spinoff, showed off its technology to reporters on Monday at its California testing facility. Waymo officials declined to say when they expect to offer the technology commercially or where it will first show up. The technology seems mature, but questions and challenges remain.   MERCED COUNTY, California — California's Central Valley is known for its miles and miles of farm orchards, fights over water rights, and, these days, high...