More expensive?
Not OP, but… It can drive itself…mostly (the “belt”). And when it doesn’t, you need remote drivers (the “suspenders”) to get it unstuck. I don’t need that with the car I drive myself, and it probably won’t be needed with self-driving cars (waaaay in the future, IMO).
The various safety measures in place: special regulations, extra equipment needed, guardrails like remote driver intervention. These are not dissimilar to the kind of measures we are currently putting in place to make AI code production worthy. As we get more “miles” trust will be earned and these measures will lessen.