There is a story on WSJ on Tesla's semiautonomous feature that says "Tesla will soon being equipping newer Model S sedans with semiautonomous features, including the capability to pass other cars without driver intervention". I am reading this to imply that Tesla will soon upgrade Model S to a 3-lens solution from Mobile eye versus the current single lens Mobile eye solution on Tesla cars. But on Tesla's website that advertises Autopilot, "automatically change lanes by tapping turn signal" is advertised as a feature of the Autopilot. Does anyone know exactly what features are eventually possible with the current single lens system and what extra features you will get when they make cars with a 3-lens system? (my understanding now is that the single lens cars cannot be upgraded to 3 lenses later on).