Tesla needs safeguards to prevent drivers from sleeping on 'Autopilot' - U.S. senator

(Reuters) - 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."Tesla should disable Autopilot until it fixes the problem, Markey said at a Senate Commerce Committee hearing on advanced vehicle technologies.Markey, who wrote to Tesla about the issue earlier this week, cited YouTube videos and press reports that suggested..