Nissan said they are already testing a 250 mile range version. http://www.leftlanenews.com/nissan-le...
Speaking in a recent interview with a Japanese television station, Renault-Nissan CEO Carlos Ghosn revealed
that the the top-of-the-range Leaf could offer as much as 250 miles thanks to recent breakthroughs in battery technology. This hints that Nissan could follow Tesla's business model and ask its customers to choose from one of two battery packs.
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