GM has chosen its factory in northeastern Spain to be a suitable location for rooftop solar panel installation. The predicted 10-megawatt solar station will be used to supply the plant with most of its power needs, thereby taking the title as the largest rooftop solar station in the world. To get an idea of the scale of this thing, imagine being able to power 4,600 households each year with a constant source of electricity. Now that must be big. How big you ask? GM plans to blanket about 2,000,000 square feet with about 85,000 panels by the end of September. Though, this is nothing for GM. They currently own the two largest solar panel installations in the United States and don’t plan on stopping anytime soon. Next stop, Saint Petersburg, Russia. Take that, Al Gore!