A Tesla driver was filmed in an apparent deep sleep behind the wheel as his vehicle drove down the busy Massachusetts Turnpike, shocking a fellow motorist who captured the bizarre and dangerous moment on video.

Tesla drivers using the autopilot function are supposed to keep their hands on the wheel at all times, but the man in the video did not appear to be following that rule. In fact, he was slumped forward with his chin on his chest as his Model X vehicle sped down the road in Newton at about 3pm on Sunday.

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