So I open my to find a box advertising this: “Carpool: A new discussion group that tries to make sense of Washington area traffic, moderated by The Post’s Steve Ginsberg.”

That’s fine and dandy. No one does local transpo quite like the Post. But Ginsberg on area traffic? Come on! This is the guy I routinely say hi to—-as we pass each other walking to work! I’ll have to check in on his chats and see if he discloses his nonparticipatory role in regional congestion.