I own a Tesla Model 3. My “Autopilot” is very good at lane keeping if the road has well-marked lanes, and the speed-aware (adaptive) cruise control really works well, slowing or speeding up in accordance with the vehicle in front.
Going more auto-driving, “Navigate on Autopilot” really works, particularly on freeways as well as not too winding roads. It will actually drive the car and take the correct exit using turn signals to change lanes and select on/off ramps. The algorithm still hugs (really hugs!) the center line on curvy mountain roads so I don’t use it on them.
Overall, I feel much safer driving with Autopilot engaged, but I do not go “hands-free”. For one thing, the software “wiggles” the steering wheel and if it senses a lack of friction it escalates from visual warnings to loud alarms to slowing down the car to a stop, taking traffic into account. I have experienced the fist two warnings as the friction-sensing sometimes doesn’t sense that I have my hands on the wheel. I have never had it get to the slow down and stop situation as the alarm is LOUD, as I said.
But as everybody has said, there is no such thing (yet) as a hands-free personal vehicle… once there are, there really will be no reason to own your own… just dial up 1-800-come-and-get-me-to-my-destination!