You too Gene?
I encountered a roadie heading the wrong way yesterday. I'm pretty sure he was just "in transition" waiting to cross the road, or heading to a meeting point, rather than a serious wrong way effort, but it's still frustrating.
My favourite was a couple of years ago. Middle aged man on an "ATB" riding towards me in the bike lane with the biggest grin on his face. I pointed to the other side of the road, and called out wrong way, but the grin never cracked....
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Get a bicycle. You will certainly not regret it, if you live.