http://www.nytimes.com/2007/03/11/business/yourmoney/11stream.htm - A New Battery Takes Off in a Race to Electric Cars
G.M. hopes to begin selling the first car, a plug-in hybrid version of the Saturn Vue sport utility, as soon as 2009. The second, the Chevrolet Volt, which exists only as a concept-model prototype, is a startling departure from traditional automotive design. The Volt’s internal combustion engine is not attached to the drive train as current hybrids are. In the case of the Volt, it is used only to recharge the vehicle’s batteries. In short, the Volt would function as a true electric car, with the insurance of an internal combustion engine — and not coincidentally it is also designed as a recognizably conventional American compact, seating five, which could drive hundreds of miles to Mother’s at Thanksgiving.
“The real breakthrough is with the new batteries, which offered us energy density — which in turn provided us with a reliable, high-powered package in a relatively small space,” Mr. Zelenski said.
I am sure GM will screw it up somehow.