Also, there is a magnifying effect. Every one of those "9" drivers will notice the "1" driver. They'll talk amongst themselves about the terrible drivers they've seen, never knowing they are all talking about the same high-visibility driver. But if one of those "9" drivers is actually a "10", the others could drive alongside them all day long and never even notice, because the "10" driver never did anything to call attention to themselves.

Conclusion: "Most drivers [that I notice] suck."