Parked only
An Android AI box can run Netflix and YouTube, but video should only play when the car is parked. UK rules stop video screens being shown where the driver can see them while driving.
Sensible use
Use the box for maps and music on the move, and leave video for passengers when you are stopped. Set up apps and accounts before you drive off.
Not legal advice
This is a general summary, not legal advice. Check current rules on GOV.UK if you are unsure. Browse Android Auto and streaming boxes.