Ooh, yet another Very Bad Idea.
"Tesla owners would be able to add their cars to a shared Tesla fleet that would allow them to be used as self-driving taxis when not in use."
So I can have persons unknown put ciggy burns and unmentionable stains on my expensive car seats while exposing my vehicle to additional road hazards and buggy FSD software? What a concept. And if the FSD decides to prang it, whose auto insurance rates will go up? Oh, wait, my insurance won't cover driving-for-hire at all, and Tesla won't pay either.