However, building these cars require an enormous amount of resources. The production of each E-Auto releases 10-12 tons of carbon dioxide into the atmosphere — about twice as much as a traditional car. This is mostly to make the batteries, which require lithium and other minerals which are mined and then transported around the world. Elon Musk is building his so-called Gigafactory near Berlin, which will churn out 500,000 electric cars per year. Its plans include a gas-fired power plant.