… ride, too, since hydrogen fuel cell buses generate very little engine and exhaust noise. Hydrogen fuel is stored at the new Pomona Hydrogen Fueling Station in a 25,000-gallon tank – the largest hydrogen fuel tank used for transit in North … miles on a single refueling! Hydrogen fuel cell electric buses can reduce greenhouse gas emissions by up to 135 tons per year compared to a diesel bus. That’s equivalent to planting 5,600 trees! We want you to green big too! Be one of the first …