A lot of us are guessing that our responses are used for self-driving work ... But isn't labeling of those basic concepts in static images pretty much "solved"

A lot of us are guessing that our responses are used for self-driving work ... But isn't labeling of those basic concepts in static images pretty much "solved"? I am not an expert in self-driving anything, but I don't see captchas of video from driving, I don't see stills that are half-obscured by snow, I don't see nighttime pics, I don't see weird corner cases like a van with a decal of a cyclist etc. Why don't we see captchas that seem more likely to be useful to creating datasets relevant to the more challenging problems?