I apologize if this topic has been explained on another post, but I was recently looking at someone's guess on options and prices. On their estimate they listed Enhanced Autopilot ($3,000) and Full Self-driving ($2,000). I am not an autopilot aficionado. Does anything like this exist or is it just made up and does anybody have an idea on what the difference is??. Does Tesla Model S or X define their autopilots this way?/ Thanks for the feedback.