I think it's less a privacy concern, and more a durability concern. By way of example, I once found myself stranded at 3am about 45 miles from anyone I could g

I think it's less a privacy concern, and more a durability concern. By way of example, I once found myself stranded at 3am about 45 miles from anyone I could get help from with a cracked radiator, no radiator cap, a gimp alternator, and no cell reception. I was too poor to afford a tow, had work the next day, and was in no position to get the vehicle properly fixed in a timely manner. The answer to the problem was a soda can, an oil rag, a backup battery, a few rolls of duct-tape, and periodic stops to replenish my watered-down coolant whenever the engine began to redline. Doubtless there was a more elegant solution to my problem. But that's what I came up with, and that's what I used in spite of my check engine light's protests. A smarter vehicle might well have noted how much damage I was doing to it, and refused to even start for me. The problem itself probably wouldn't turn up in an EV. But knowing with confidence that I can jury rig my car with 'incompatible' but available parts, or limp it home without triggering a safety mechanism that can only be reset by an authorized mechanic has become important to me, even if my commutes are broadly limited to city limits anymore, and I can afford a mechanic now. Similarly, it's important to know that your car can be worked on by unlicensed mechanics in a pinch. Part of that is being confident that you won't lose that option in an OTA update, and that your car won't actively look for open WiFi hotspots in order to check for that (smart TV's are rumored to do this, I would assume a car is at least that advanced). There are also issues of trust to be had around cameras replacing mirrors without offering a good fallback to the driver. The market has spoken, it doesn't really care about these things, so ultimately I don't think a dumb car'll be an option going forward. But those are what I believe to be reasons to want one.