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Unformatted text preview: et looming economic, energy and environmental challenges. In a world where 95% of motorized mobility is currently fueled by
oil, high-speed rail offers a proven means of reducing dependence on this increasingly problematic energy
source.This value of using proven electric propulsion technology should not be underestimated when both the time and
money to deploy energy alternatives are in short supply.In our recent book Transport Revolutions, Richard Gilbert and I
documented the economic, environmental and political dividends to be gained from replacing the internal combustion engines powering today's
aircraft, cars, and motor vehicles with traction motors that can be powered by multiple energy sources delivered through the electric grid. Since
electricity is an energy carrier, it can be generated from a mix of sources that incorporate the growing share of
geothermal, hydro, solar, and wind energy that will be produced in the years ahead. And because electric motors are
three to four times more efficient than internal combustion engine...
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