It's a slick design, but unless it's expected to be used in very limited scenarios, the lack of a control surface (or even how Tesla expects to build an OC) for edge cases is worrying.
An emergency joystick would be pretty cool. Actually, a joystick to give the driving AI input would be great too. "Maybe squeeze a little farther left here". "Slow it up, the road is sketchy here". "It's safe, drive faster".
I expect that the general handling of edge cases for any control-free robotaxi is that you call for emergency services, or an Uber, depending on severity.
The control-free stuff they're rolling out is generally being trialed or used on very narrow routes - roads where they've even built mild infrastructure to make it easier for AVs.
