No one seems to realize how fantastically difficult self-driving is until they are deep into it. Apple, Cruise, and Tesla all seem to have made this mistake.
It's a shame that Apple won't be dumping its substantial resources into self-driving, because we'd all be better off if there were a viable competitor to Waymo (who now seems uncatchable).
i've long been very suspicious of L5 being more or less impossible, though, so perhaps i'm just seeing signal where it's not there.