I don't know why, but whenever I'm driving down a lonely dirt road, way out past where the buses don't run, and I pass another vehicle coming in the opposite direction, I wave. I have no idea why. I mean, I don't know the other driver from Adam's house cat. Maybe it's a holdover from the old place in Knoxville, where the only people I'd encounter on the windy lane leading down onto the peninsula were friends or neighbors.
Anyhow, even when you don't know them from Adam's house cat, you know what? They wave back. It's probably just confused reflex on their part, but it makes me smile.