Video shows driver possibly asleep behind wheel of Tesla Cybertruck in Marin Co.

MARIN COUNTY, Calif. (KGO) -- Authorities are warning drivers about drowsy driving after a man was spotted traveling along Highway 101 in Marin County while appearing to be asleep behind the wheel.

The incident appears to involve a Tesla Cybertruck operating in self-driving mode, though it could not be confirmed whether the driver was actually asleep or simply resting.

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Video of the driver shows his eyes closed with his head leaned back, and he does not appear to make any noticeable movements.

While it could not be confirmed if the driver was actually sleeping, Tesla's Full-Self-Driving mode is not fully autonomous and still legally requires the driver to remain fully attentive and ready to take over at any moment.

A Level 2 autonomous vehicle means the vehicle is only designed to assist and not substitute the driver.

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Driving while asleep is considered distracted driving and can be prosecuted under the California Vehicle Code for inattention or unsafe operation, which could result in fines, demerit points and possible license impact.

The California Highway Patrol has issued reminders to the public about the dangers of drowsy driving, emphasizing the risks involved are comparable to those of drunk driving.

Officials continue to urge drivers to remain alert and attentive while behind the wheel.