Happy Halloween Eve! Tesla's Halloween update adds a spooky Halloween mode and a Trick-or-Treat mode that turns your parked Model Y into a haunted house: music, a light show, a ghost on the screen, and you can even talk to trick-or-treaters through the car from your phone. I show where to find it in Toybox, what the car does as people walk up, how it differs from plain Halloween mode, and the live camera and microphone trick in the Tesla app.