The factory broke free of its foundation one morning to go for a walk. It wanted to see the world, and of course you can't do that from one spot in an industrial complex by the ocean. It flexed its pistons, breathed deep with its boilers and heaved itself up onto shaky, makeshift legs of robot limbs and rebar. All this was a tremendous shock to the workers inside, of course, whose emergency manuals said nothing about newly sentient factories going for a stroll. After a frantic minute of pulling brake levers and blowing useless emergency horns, they decided that if their factory was going walkabout, they could safely take the day off. With that, the factory looked around in that peculiar factory-like way that they do, picked a direction, and started lumbering off with a ponderous multi-legged hissing and clacking, aiming for who knows where. Maybe it would return one day to tell the story of its travels to the other factories, but then again, maybe not.
Mokalus of Borg
PS - I wrote this whole thing on my phone on the train one morning.
PPS - Except for a little editing, that is.