I found this useful: https://seeingmachines.com/understanding-advanced-driver-dis...

From that article:

"Like DDAW systems, ADDW systems must function without the use of biometric information, including facial recognition, of any vehicle occupants. It must also operate within a closed-loop system, only recording and retaining data on the device that is necessary for the system to function."

but also: "ADDW systems use cameras and sensors to track a driver’s head position, eye movements, and gaze direction"

and

"only recording and retaining data on the device that is necessary for the system to function"

Not sure why such stuff would need to be retained to function. Also if they need to track head position and gaze direction those definitely have to be higher resolution camera and/or pointing directly at your head - so at least capable to store biometric information and hacked remotely since more cars are having telemetry.