I know where the cellular transceiver is in my car. I had to really root around to find where it was. I haven't removed it because you have to take the whole console apart and even then disabling it involves some iffy wiring fuckery, and I've just never had the gumption to actually do it (depression sucks for opsec).

But it's there. I figured out that it was there when I got e-mails containing information that could only have come from someone with remote access to the car. I have no idea what other capabilities are hidden in the software but at the very least it can tattle on me to unknown third parties. I hate it so much.

predictably, when I was asking around on forums to find out how to disable it, everyone on the forums though I was a quack. : p