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Plug-in hybrid from GM is nearly ready for testing

TRAVERSE CITY, Michigan: General Motors said Thursday that it had "essentially finished" designing its first plug-in hybrid car, the Chevrolet Volt, and would have production-ready prototypes within 10 days. The automaker still has considerable work to do on the car's lithium-ion battery and other technology in the two years before the Volt is scheduled to go on sale, but completing the design is a milestone for what is arguably the most crucial car in decades for GM.