At the 2012 Paris Motor Show, which opened last weekend, Audi unveiled its brand-new Crosslane Hybrid Coupe concept, which is powered by a 1.5L three-cylinder engine and two electric motors.

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For the Ford F-150, the most popular vehicle on American roads, they take out the inevitable V-8, and replace it with a four-cylinder engine, an average of 22-kilowatt-hour battery packs, and two 60-kilowatt electric motors.

FORBES: Written by Jim Motavalli