So the other day I was driving home from an errand, saw him by the side of the road, and nodded to him in greeting - there wasn't really time to stop and chat.
I arrived home, and couldn't shake a weird feeling I had. I couldn't quite explain why I had it. But I pulled out my phone to message his wife. Didn't get a response.
By that time I understood why I had a weird feeling. He'd been sitting by the road in a fairly relaxed kind of way. But it was the location he'd chosen: on the guard rail.