Don't forget, for L5 it also needs:

- Do the right thing in construction zones where signs and/or barriers may indicate that following the lines is wrong (including flag-men)

- Detect when an out-of-site emergency vehicle with sirens running may be approaching the next intersection and slow down

- Go 25 "when children are present" and 55 when children are not present (though TBH, humans are mediocre at this, and L5 only requires human-level ability)[1]

To my knowledge, there's nothing in the prototype stage that can handle the above in sunny weather. Going from "No protytpe can do this in sunny weather" to "Commercially available in 8 years" seems unlikely even if we restricted it to "only in areas with no snow"

1: For the non-Californians, I drive by 3 of these on my way to work: https://www.pressdemocrat.com/article/news/what-does-when-ch...