"Tesla’s driver-assistance features can steer, brake and navigate a vehicle, but drivers are supposed to be ready to take over at any moment."
Funny how no one ever talks about driver reaction time as a real weakness in this protocol. And that's assuming the driver is actually paying attention while not doing any of the driving, a questionable assumption at best.
Calif. DMV ready to block Tesla sales if 'Autopilot' issue not solved
https://www.sfgate.com/tech/article/dmv-block-tesla-sales-autopilot-21246814.php