An Austin-based start-up called EEStor http://en.wikipedia.org/wiki/EEstor promised "technologies for replacement of electrochemical batteries," meaning a motorist could plug in a car for five minutes and drive 500 miles roundtrip without gasoline.
By Grant Slater, Associated Press Writer
Full Story: http://www.usatoday.com/money/industries/energy/2007-09-04-new-energy_N.htm