Up until v recently cars were not remotely accessible and part of a command-and-control network which Teslas are (perhaps other modern cars are too, I only know Tesla because I have one).

I know that the car reports practically all user events to Tesla in real time over the cell network (eg, open door), and I know it has root access. I don't know if that root is available remotely and I don't know if foundational commands like steering, acceleration and brake are accessible via the CLI (they are computer controlled actions locally)

THUS I would not want to drive a Tesla if there was the possibility of all cars being rooted and remotely controlled by an unauthorized actor.

Given electric cars are responsible for much bigger responsibilities than combustion cars (avoid driving into that bicyclist), there are new concerns here which beg extra consideration.

People have been killing each other with weapons for as long as they've been around, nuclear weapons shouldn't be anything new.