Tesla mulling two theories to explain 'Autopilot' crash: source

(Reuters) - Tesla Motors Inc told U.S. Senate Commerce Committee staff it is considering two theories that may explain what led to the May 7 fatal crash that killed a Florida man who was using car's "Autopilot" system, a person familiar with the meeting told Reuters on Friday. Tesla staff members told congressional aides at a briefing Thursday they are still trying to understand the "system failure" that led to the crash, the source said. Tesla is considering whether the radar and camera input f