General Motors rolled out the Chevrolet Volt two years ago with lofty sales goals and the promise of a new technology that someday would help end America's dependence on oil.
The first mass-market electric cars go on sale next month, and the nation's electric utilities couldn't be more thrilled _ or worried.
Chevrolet has just introduced the all-new, 2011 Volt electric vehicle with extended range, establishing an entirely new segment in the global automotive market.
