hydrogen-fueling station. You can thank Shell and Toyota for picking up this government-funded green project. Sure, while the few other hydrogen stations still rely on delivery by supply truck (presumably running on diesel, ironically), this nevertheless marks a new milestone for our squeaky clean fuel, and it's only a matter of time before more stations get piped up to Air Products' hydrogen plants. If there's any indication of a time frame, Wired reminds us that 2015 should see the arrival of many new mass-market hydrogen cars from Toyota, Honda, and Mercedes-Benz. Not long to go now, fellow tree huggers.