[bdamm]

Can you cite any specific parts that are handshaking via certificates that need renewal? In many cases device authentication is turning towards certificates that don't expire, and I'm unaware of any certificate renewal cases inside a Tesla. If they are there, I'd love to know about them.

[NotSammyHagar]

I suppose you wouldn't be able to update the os. But the car is just fine without network access. You can unlock with key, charge it, etc. It doesn't require network connections in any way. It has downloaded maps. Unlike say your BMW, your car maps get updated periodically over the internet.