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The new Prius is designed so that its battery pack can be swapped out for a plug-in lithium-ion battery.
Just as the company makes engines, it will now make battery packs for electric cars.
The new Mini borrows a drive system from a high-performance electric sports car.
GM and Nissan hope to reduce costs by reusing depleted batteries.
Electric cars arrive, and solar, batteries, biofuels, and engines all advance.
A Chinese-built electric sedan could be the first on sale in the United States, but it will quickly face competition.
In November, Fisker Automotive will begin sales of a car with 50 miles of battery-powered range.
Nanoporous silicon that soaks up ions without self-destructing can make better batteries.