Earlier quoted context omitted.
I think almost no commercial value is at 4. I'm fact, it could be negative value. Because you need the expense of a "digital driver" and the expense of a human driver. It's basically level 5 or bust.
Level 4 (e.g. highways in good weather) is something that people buying cars will pay a significant amount for as an option in good weather. It does nothing for those who want robotaxis. But the former don't care about the latter. You have multiple groups of drivers including those who appreciate self-driving assistance on long boring highway stretches and may not even drive in cities that much and those who never wa…
You could force the car to avoid certain intersections with lots of close calls, or give the car advance info about unexpected objects detected in the road by cars up ahead, etc. which would make the task a little easier.