With the introduction of vehicles such as the Chevrolet Volt, Nissan Leaf, and Toyota Prius, you now have a handful of choices of hybrid-electric vehicles. If the motivation for these vehicles is reducing our dependence on oil, how do they compare to one another? What about reducing greenhouse gas emissions? And on top of all of this, are the costs worth the benefits? Given the potentially harmful environmental impacts of continuing an oil- and gasoline-based automobile industry, a professor at Carnegie Mellon has been working to answer these questions.
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