People have been seen on YouTube putting tremendous faith in the autopilot feature.
From playing patty cake to taking part in arm wrestling matches, these motorists appear to be concentrating on anything but the road.
The startling videos posted to YouTube show people lounging around — and even reading — while their self-driving cars do all the work.
Read: Mom Accused of Texting Seconds Before Deadly Crash Acquitted in Death of Daughter, 2 Nieces
The footage comes in the wake of the first death of a motorist inside a self-driving Tesla. Joshua Brown, a Navy SEAL, died after smashing into a tractor-trailer near Gainesville, Florida, in May. Witnesses said he was watching a Harry Potter movie at the time, a claim Tesla has disputed.
A second serious crash involved a Tesla on autopilot has also been reported. Police in Pennsylvania say the motorist smashed into a guardrail and a concrete median before his car rolled onto its roof on July 1.
Experts say that despite the self-driving technology, motorists need to keep their eyes on the road. Bob Sorokanich, news editor for Road & Track Magazine, called the videos "foolish."
"You do need to have your hands at the ready and your feet at the ready because you do not know when the technology is going to say, 'I don't know what's going on now,'" he said.
But a motorist in one of the videos says he trusts the technology. Nico Rosales told Inside Edition he sat in the passenger seat while his car traveled at 70 mph — with no one behind the wheel.
"It's a little dangerous," he said, "but I have a lot of faith in the system."
But another Tesla owner said he had a close call when his car suddenly veered into the path of an oncoming car.
"Had I not reacted quickly to jerk the steering wheel in the opposite direction, I might have clipped it," he wrote as he shared the video to YouTube.
Read: Navy SEAL Killed While Behind the Wheel of Self-Driving Tesla
A Tesla spokesperson told Inside Edition that drivers need to stay alert.
"Autopilot is designed to add a layer of safety to our vehicles and is by far the most advanced driver assistance system on the road, but it does not turn a Tesla into an autonomous vehicle and does not allow the driver to abdicate responsibility," they said.
"It is paramount that our customers exercise safe behavior when using Tesla vehicles — including remaining alert and present when using the car’s driver assistance features."
Watch: Man Died Watching 'Harry Potter' When Self-Driving Tesla Crashed: Witness
