Idling your car wastes more fuel than turning it off and restarting it. The facts are simple, and the solution is elegant! In fact, the people behind this infographic will give you a free bumper sticker so you can share the news the old-fashioned way. (Wait, were bumper stickers the original social sharing platform?) So check out these easy-on-the-eyes figures, and share this with everyone in your carpool. If they're not into saving 40,000 tons of CO2, maybe they'd be into saving up to a couple hundred bucks a year in gas money.