In an interesting turn of events, Tesla and Toyota have formed a partnership of sorts around the recently closed Nummi plant in Fremont, California. Nummi, the auto plant that just won’t die, started as a GM venture, closed, then was reopened as a joint GM and Toyota venture. Toyota will invest $50 million in Tesla Motors who will turn that money around into reviving Nummi as the factory for its new Model S electric sedan. Akio Toyoda’s ride in Elon Musk’s Tesla Roadster must have given the Toyota president hope for moving beyond his company’s recent recall troubles. It’s that Silicon Valley startup energy sparking in the sound of a silent car.