At MIT there lives a pool of very crappy bicycles. Some have been drifting around the campus for years, part of a weird cycle. They are used by a student, then abandoned on a campus bike rack, then end up in the possession of the school, and then auctioned back to a new generation of students. Because it is MIT, no bike is considered beyond fixing, so many have lived well past their time. The mechanics at Cambridge Bicycle have a different view, and will stand guard at the door of their bike shop on the auction day like a battlefield nurse, deciding which gets to come in and live and which needs to go straight to the dumpster.