The first thing you notice when you step onto Tesla Motors TSLA -5.22% production floor are the robots. Eight-foot-tall bright-red bots that look like Transformers, huddling over each Model S sedan as it makes its way through the factory in Fremont, Calif., on the eastern, shaggier side of Silicon Valley. Up to eight robots at a time work on a single Model S in a choreographed routine, each performing up to five tasks: welding, riveting, gripping and moving materials, bending metal, and installing components. Henry Ford and the generations of auto industry experts who have followed would dismiss this setup as inefficient–each robot should do one task only before moving the car on to the next Transformer.
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