Sources detail regulators’ difficulties regulating Tesla as it rolls out self-driving features, resorting to threats and flattery in exchanges with Elon Musk (Faiz Siddiqui/Washington Post)

Faiz Siddiqui / Washington Post:
Sources detail regulators’ difficulties regulating Tesla as it rolls out self-driving features, resorting to threats and flattery in exchanges with Elon Musk  —  SAN FRANCISCO — The first time Washington regulators tried to investigate Tesla’s Autopilot software, CEO Elon Musk was irate.