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I think it's important for the federal government to play a role in bootstrapping quality initial high speed DC charging infrastructure on the interstates quickly and then private investors can bankroll scaling up of additional charging facilities as demand is demonstrated by actual drivers. Tesla is motivated to do this for its own cars out of a desperate need to succeed with a BEV-only product line. The rest of the auto industry has multiple conflicting interests that will slow a true national transition to general purpose consumer EVs without a 3rd party like the Feds stepping up.
Beyond the interstates, there should probably be an additional longer-term program akin to the "rural electrification" efforts in the 1930's and 1940's to help enable basic fast DC charging on less traveled routes as well.
Interesting article. Gov. Granholm was very interested in green technology while she was in office. Her official portrait in the State Capitol building has a small Chevy Volt in it.