Probably blutooth from your phone. Your phone knows all, and everything it talks to knows all.
Right. I used Bluetooth on my phone to play a song. Next thing I knew....all the phone numbers of my contacts were on the cars computer screen. If that info gets to be picked up by some sensor... it is now not private. Plus if someone steals your car, they can get a whole list of your friends and phone number...
Johnny: Wake up, sucker, this is the phone company we're talking about! They see everything, they know everything, they got their own covert police force! I'm probably wired for sound right now! I gotta get out of here!
Venus: Johnny!
Johnny: Don't use my name!!