I'm considering an upgrade to a used Model S with either AutoPilot 1 or 2. Blind spot detection will be important for me, so I wanted to understand how it works on both AP1 and AP2. For either AP, is it necessary to turn on Autopilot in order to see those visualizations on the dashboard screen? If you're moving into another lane, with and without using the turn signal, will AP1 or AP2 display other vehicles?