The 102EX is a fully plug-in electric version of the Rolls-Royce Phantom. For now, at least, there are no plans to produce the 102EX for customers. The car is purely a test vehicle. To power such a massive car-- the Phantom weighs about as much as a full-size SUV -- the 102EX boasts the largest battery pack of any electric car, according to Rolls-Royce.
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Last updated March 01 2011: 2:42 PM ET