> I believe on Teslas you can outright remove the SIM that provides internet, and the car would function mostly fine. Used model 3s are in the sub $20k range now.

A friend of mine had his Tesla's radio/modem/whatever chip die, so his internet connectivity stuff didn't work. He told me that most things continued to work just fine and he continued to drive it for a few days while waiting for his repair appointment.

So... add a "friend of a friend" confirmation to that.