Hacker News Reader

If you can think of this concern in 8 seconds or so, I assume automotive engineers can too.

It falls back to current behavior of just having the headlights on in the case of an error like that. There was another article on these a week or two ago on a different website that specifically mentioned something like that.

Manual override?

I'm thinking they'll probably include a fail-safe of some kind.

Yeah... most everything on the wiring harness goes back to a computer, these days... and modern ECUs will ignore data that doesn't fall within expected parameters.