I appreciate the positive notes this thread is adding to our forum. My favorite experience involving vehicles occurred after the long, narrow, and winding eastbound climb to Wauconda on the Northern Tier.
Having plenty of time to think, as I was on a solo tour, I realized that I could categorize vehicles coming up behind me by sound. Tires on pavement meant passenger vehicle, and I kept pedalling. But if all I could hear was the groan of a diesel, I knew it was a big rig and I took advantage of the moment to pull over completely off the road, turn around, and wave at the trucker with a big smile.
At first, the drivers seemed a bit surprised, but after a moment they grinned and waved back. Then something strange happened. I noticed truckers coming down the hill towards me slowing down, flashing their lights, and waving at me with smiles.
When I got to the wonderful cafe/post office/liquor store/chinese restaurant near the top, I went in for a cheeseburger and a milk shake.
As I waited for my food, an old timer with a white beard down into his lap gazed at me from the next booth.
"You are one of the few," he said.
"You are one of the few who know how to ride a bicycle on these roads. We've been talking about you for a while now. If every cyclist through here rode like you we'd have a lot fewer close calls."
I'll never forget that day and that encounter. Yes, as cyclists we have the legal right to claim the road. But as a person on vacation, I'll always be willing to tip my helmet to the working person and help them as they wrestle their big rig up a narrow road!
p.s. Interesting comment on hybrids... my sound taxonomy will fall apart when I'm being passed by a Prius!