This is incredibly generous assumption, especially given the fact that cars with advertised Autopilot features, like Tesla's offerings, actually make accidents more likely[1][2]. Compared to the driver fatality rate in other luxury vehicles, Tesla's offerings nearly triple driver fatality[3].

This is like theorizing about a car that survives 99.9% of all impacts at any speed. It doesn't exist, nor is there any indication that it will exist, and it doesn't serve a purpose other than to prop up a contrived argument.

[1] https://arstechnica.com/cars/2019/02/in-2017-the-feds-said-t...

[2] https://driving.ca/tesla/model-s/auto-news/news/iihs-study-s...

[3] https://medium.com/@MidwesternHedgi/teslas-driver-fatality-r...

[Quick edit: a good question here though is what kind of drivers test is sufficient for us to even begin considering autonomous vehicles? Is that even answered?]

At level 5, one expects a self-driving car to ride gravel roads, park in highly temporary parking spots, spot police officers and follow their orders, drive short distances on non-roads (e.g. to drive around a car pile-up), etc.

A car that recognizes those cases, stops, and tells it’s passenger “please help me out for a few meters” would be a fantastic accomplishment and very, very successful, but wouldn’t qualify as level 5 autonomous.