I wonder if Anne is talking about cyclists out on a group training ride. If there is a number of bikes, in a string or perhaps a little spread out, travelling down the side of a narrow-ish road it might make it difficult to pass -- I mean if you can't overtake a few and get back in. I know I'm stretching it a bit. I bike and drive and quite frequently on my way to work I see guys coming the other way on a group session. I've never experienced the "problem" I describe while driving, but maybe it happened to her.
I'm only posting because I had a great ride this evening. No horns beeped at me, lots of room given, people cruising behind me (patiently?) waiting to pass at the next safe spot. I wish I had a sign on my back saying "Thanks for the room!". I put my hand up to a lot that waited, but sometimes you're just too busy hammering along in the drops
