Blending the efficiency of a plug-in hybrid with the sleek silhouette of an upmarket sports coupe, the Cadillac ELR is essentially an amalgamation of two niche vehicles. Is the market ready for Cadillac’s unique brand of sustainable sportiness? KBB’s Zach Vlasuk investigates.

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http://www.kbb.com/cadillac/elr/2014-...

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