Volkswagen claims 270 mpg fuel economy for its new XL1 plug-in hybrid, a limited number of copies of which the company plans to build. The two-seater employs an 800 cc diesel engine and an electric motor while relying on an aerodynamically efficient body design and weight savings to keep fuel consumption down. Meanwhile, Hyundai's 2013 hybrid is finally available. It sports a 47 kW lithium polymer battery pack, and gets about 38 miles per gallon for combined city and highway driving.
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