Repurposing Interstate Highways
"If we are going to spend billions rehabbing the highways, shouldn't we, at the same time, invest in adjacent rail lines like the 800-mile high-speed rail system voters approved last year in California.
The corridors are also perfectly suited for the transportation of energy. Power generated from rural wind farms and solar plants could run through lines buried under the highways to big cities where electricity is needed. The plug-in hybrid vehicles that will someday use the highways could charge up from this grid. And when left idling, these cars would also be able to supply power back to the grid at times of peak demand, while their owners work or shop by the roadside."