They have a driver attention detection system, that works even with dark glasses, as the driver in this case. Also even if you do not take over in the 10 seconds, like in the case for example of the driver fainting, or having a heart attack, the car will stop safely on the side of the road, alert emergency services, and unlock the doors for first responders.
Notice also on this example:
https://youtu.be/gzcR8RaC3-g?t=397
They have a driver attention detection system, that works even with dark glasses, as the driver in this case. Also even if you do not take over in the 10 seconds, like in the case for example of the driver fainting, or having a heart attack, the car will stop safely on the side of the road, alert emergency services, and unlock the doors for first responders.