Sorry if I have misinterpreted what you are asking here, but my understanding of the Koan, where it leads my thinking to, traffic wise is:
The expert is the good driver, doing everything well. Creating no problems. And being ignored as a result. He has an accident (doesn't understand...) and then people notice him. Offer to assist him.
Now that is NOT a peeve, so I'm guessing its not what you meant. But its where my mind went.
Haha sorry to say that it's wrong, brother. You know, I think that's influenced by how much you know me, as I feel your interpretation applies more to me haha! I do appreciate it, and I'm happy that our friendship is at that level.
"Expert", "advice" all of there are superficial. I guess what I'm trying to point at is how people can proclaim themselves as a shining example. Sometimes they can be blinded by their own self-praise. If everyone would just lower themselves or how they think of themselves, everyone would have a clearer view of what's ahead of them.
Admittedly, the koan was rushed, so the interpretation is a bit hazy. I'm surprised if anyone would get this, that's why I'm providing a lot of buzzword clues.