https://www.reuters.com/article/us-tesla-safety-congress/tesla-needs-safeguards-to-prevent-drivers-from-sleeping-on-autopilot-u-s-senator-idUSKBN1XU2D4 >Democratic U.S. Senator Ed Markey asked Tesla Inc on Wednesday to disable its "Autopilot" driver-assistance system until it installs new safeguards to prevent drivers from evading system limits that could let them fall asleep.