Today I walked into a building and discovered that someone had taped a mezuza onto the "doorpost" of the elevator. The elevator is about 1m x 1m square - way too small for a room to justify having a mezuza - and besides which, even if the elevator were 4x4 amos (minimum measure for a "room"), would the elevator require a mezuza, bearing in mind that the "room" keeps moving, and most of the time the mezuza is simply "guarding" an open shaft?
Is there even a documented chumra of putting a mezuza in such a position? Or this just a bizayon (disgrace) of the mitzva, and should I protest about it?