Road to Fuel Efficiency Is Lined With Orange Cones - washingtonpost.com

Road to Fuel Efficiency Is Lined With Orange Cones - washingtonpost.com: "The case for plug-ins is gaining support. Lawmakers have championed the technology. GM and Toyota both have plans to produce plug-in hybrids that will run on lithium-ion batteries. Nissan, after being skeptical of the cost effectiveness of plug-in technology, recently began developing its own model. Yet even within this camp, there's heated disagreement over whose approach is best."