I agree it doesn't feel right. I have a Tesla, and often come out and find other Teslas parked right to mine. Sometimes 4 or 5. At some point, someone would've been able to unlock mine and done something to my car. Or similar settings anywhere else.

I think we'd have heard this story more than once if it was possible.

EDIT: I grant the possibilities outlined by the responders to my post... still, I'll put a little $$ on this getting clarified otherwise in the coming weeks -- but not any more than that, as I've lost a $ in this week's banking crisis.