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xkcd #2842: Inspiraling Roundabout
(imgs.xkcd.com)
Alt text:
Look, I just think we need to stop coddling those hedonistic roundabout hogs who get into the inner lane and circle for hours, wasting valuable capacity.
We have a small traffic circle near us, across from an outdoor restaurant. One day I was eating there and saw this dude start circling it endlessly until the police happened to show up, then he took off.