Tesla says drivers are supposed to keep their hands on the wheel and remain alert when autopilot is turned on. Another video posted late last year shows not all drivers follow those instructions.
"Autopilot is getting better all the time, but it is not perfect and still requires the driver to remain alert," Tesla said.
"Nonetheless, when used in conjunction with driver oversight, the data is unequivocal that Autopilot reduces driver workload and results in a statistically significant improvement in safety when compared to purely manual driving."
Sign up for CIO Asia eNewsletters.