The MTA Maryland has long been a diesel fuel propelled organization like many others. But like Washington Metrobus, Ride-On, New York MTA, and Boston's MBTA they chose alternative sources to be environmentally friendly, save on fuel consumption, and price of cost-per-mile on buses. Like many who alternated diesel with CNG fuel has have success for the past years. I believe the MTA Maryland is choosing not to study that alternative because of the LNG project that fell through with the Flxible Metro D "LNG" model in the mid-1990s. We know now that liquefied gas can easily evaporate and not recommended for anyone who has no experience behind the helm. Since then natural gas has stepped-up to be efficient and properly handled, as well, more technological studies behind it. The MTA Maryland is ready to make the next big step with the Red Line project completion around 2019-21 and to propell Baltimore from the underdog position to the recognized household names. Alternative fuel source definitely stands out from the regulars and can prove efficient to the city.