As a non-owner I
was under the impression it would keep you in a lane and prevent you from hitting anything regardless of where it was coming from and what size it was (deer, swerving cars, road garbage, etc). I was under the impression you did not have to monitor the car to ensure your safety and you could therefore send a text, read a book, sightsee, but maybe not take a nap with only a casual glance here and there for safety. To me this is the definition of auto-pilot. I understood it couldn't drive you home if you were drunk b/c it was limited to highway driving only and eventually you'd need to do some surface streets to get home.
This is coming from someone who has been following tesla closely for the last few years and even owns stock so you can only imagine the public was probably even less informed than that.
Doing some research after this collision makes me realize its not that special as
@diamond.g explains very well and has told me its not something worth spending my money on in my model 3. People text and drive enough as it is, having the Tesla system will only make it far far worse.
I looked up the definition of autopilot and it is: "A device that steers a ship, aircraft, or spacecraft in place of a person"