I confess that I am a recent convert to the "Way of Steel" (Ferrovia) - ahem - steel wheel on steel rail.It's the LAW (of Physics) that convinced me.....http://www.brooklynrail.net/science_of_railway_locomotion.html At the same constant speed, on level ground, drawing the same load, any steel wheeled railway vehicle already in motion, will use only 5% (1/20) of the energy consumed by any large pneumatic tire road vehicle already in motion. Upon starting and initial acceleration, any steel wheeled railway vehicle will only use 10% (1/10) of the energy demanded by any large pneumatic tire road vehicle.....Does saving 95% have a nice ring to it?That is the REASON for rail's ascendancy - not politics - not lobbyists. The day America transfers 80% of its passenger and cargo transit to electric rail, oil imports go to ZERO. Domestic production will be enough to fuel America's much smaller fleet for generations.....Whether or not you believe that the auto / petro / highway cartel killed off streetcars, the fact remains that since 1970, America is no longer Queen of Oil. And the only thing that has a chance of cutting our dependence on imported oil is the electric choo choo, in all its forms - heavy rail, commuter / interurban, light rail, streetcars / trams, funiculars, cogwheel, etc, etc.