High Speed Rail is environmentally friendly  Trains are the most sustainable and green form of transportation. Electric high speed rail is the most energy efficient of all trains. This is because trains have significantly high capacity but have very low power requirements in order to work by comparison to the number of passengers that they carry. Although this is to some extent dependant on how the power is generated the Eurostar (where power comes from French nuclear plants) emits only 11g GO2 per passenger kilometre from London to Paris compared to 180g for a car containing 1.2 passengers and 150g for a short haul flight. [1]  A national high speed rail system would be the centrepiece of a sustainable America, and would significantly reduce congestion and America’s dependence on cars and the oil that fuels them. This would result in large cuts to carbon emissions. Any new system could be powered by renewable energy including wind, solar, geothermal, and ocean/tidal in order to make it even cleaner. High speed rail could be integrated in to a sustainable network including local commuter rail and tramways so providing public transport networks that solve serious mobility, energy, environmental, economic, health, and social problems simultaneously. [2]  [1] Pearce, Fred, “Greenwash: Time for rail to raise its game and cut emissions”, Greenwash guardian.co.uk, 22 January 2009,   [2] “Sustainability.” US High Speed Rail Association.