Tesla Autopilot gets automatic braking just as Consumer Reports downgrades safety rating

2017 Tesla Model SSix months ago, Tesla abruptly announced that it had upgraded its electric cars with a new package of sensors for the Autopilot driver-assist system, known as "Hardware 2." The equipment was being fitted to all new Tesla Model S and Model X electric cars then in production—but there was a catch. Initially, those cars would have fewer...