Toyota is doing some last-minute testing on the Prius plug-in-hybrid version, which will have its retail launch about a year from now. A total of 163 plug-in Prius prototypes are distributed to universities, utilities and car-sharing services such as Zipcar. The biggest group composed of 18 Prius vehicles was sent to the University of Colorado-Boulder through Xcel Energy’s SmartGrid project. Other groups that will get the plug-in Prius prototype are the Silicon Valley Leadership Group, Portland State University, the California Center for Sustainable Energy and the Clean Cities Coalition of New York.
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