On the way home, I waited for a car driver to do a three point turn, in a typically cack handed manner, and as he straightened up, he rolled down his window and asked me if I knew where a particular road was.
The name was familiar, but after a moments thought I couldn't remember where it was, so I apologised to him, saying I'd seen it around, but couldn't remember where. He thanked me for that, and drove off in the opposite directions and I continued on my way. Ten seconds later I went past a sign marking the road he had just asked about, but he was too far away for me to be able to attract his attention by this point!