High Quality Content by WIKIPEDIA articles! Parry People Movers Ltd. (PPM) is a British company manufacturing lightweight trams and railcars that use flywheel energy storage (FES) to store energy for traction, allowing electric systems to operate without overhead wires or third rails, and railcars fuelled by small gas, diesel or hydrogen engines, offering very high energy efficiency and very low emissions, suitable for new-build or existing rail systems in a variety of gauges, serving both urban and rural communities in any part of the world.
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