A driver told authorities that their Tesla’s “full-self-driving” software braked unexpectedly and triggered an eight-car pileup in the San Francisco Bay Area last month that led to nine people being treated for minor injuries including one juvenile who was hospitalized, according to a California Highway Patrol traffic crash report.The pileup took place just hours after Tesla CEO Elon Musk had announced that Tesla’s driver-assist software “full self-driving” was available to anyone in North America who requested it.It requires an attentive human driver prepared to take full control of the car at any moment.It’s delighted some drivers but also alarmed others with its limitations.Tesla’s driver-assist technologies, Autopilot and “full self-driving” are already being investigated by the National Highway Traffic Safety Administration following reports of unexpected braking that occurs “without warning, at random, and often repeatedly in a single drive.”The agency has received hundreds of complaints from Tesla drivers."