Protean Electrics retrofitted through-the-road plug-in hybrid van showing significant fuel economy gains
Green Car Congress
AUGUST 2, 2011
Protean Electric’s through-the-road hybrid van. Protean Electric and Millbrook Proving Ground partnered to produce the Vivaro diesel hybrid. It’s the closest thing to a bolt-on hybrid system. While operating in hybrid mode, the Vivaro measured 114 mpg (2.4 Click to enlarge. in Traverse City, Mich.
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