Its not that "modern" vehicles migrate to CAN. CAN was introduced in 1990 with the Mercedes S class. Since then everybody adopted CAN. At least with OBD-II, which is mandatory in many countries around the world, every car has CAN these days.

Since about 2000 modern cars have integrated further technologies beginning with LIN to replace simple IO wires in the doors and alike.

At the higher end side we hade Byteflight, Flexray, TTP/C and now Automotive Ethernet based on BroadReach.

I don't know much about the space so let me know if I'm wrong, but from my point of view there's still a world of difference between all devices working on a packet network (that's simply efficient) and having ten cameras filming surveilling everyone around me continuously and executable code being pushed to my vehicle over an always-on connection that I have no control over. And then on top of all that is tactile controls so you don't need to avert your eyes or pause podcasts to adjust the windscreen wipers.

> an always-on connection that I have no control over

Has anybody tried disabling the LTE antenna (or whatever it uses) on a Tesla for privacy/security reasons? I'm sure hoping the car still drives fine without it, but can it be done without utterly voiding the warranty etc.?

I'm sure you can come to a safe stop, and there have to be provisions for when not in mobile range because that does happen on occasion, but long term I wonder what it does for warranty or various features that might have (known or even unknown to tesla) dependencies on being online. I also seem to remember reading about a time lock, i.e. needing to be online every x time, but not sure.

While I've had a vehicle with CANbus and no documented fusebox (BMW R1200S), that was probably because it used self-resetting fuses. CAN doesn't remove the need for fuses to protect the wiring, and they don't seem to be going away.