The Decarbonization ImperativeTime is of the essence. Climate change looms as a malignant force that will reshape our economy and society for generations to come. If we are going to avoid the worst effects of climate change, we are going to need to effectively "decarbonize" the global economy by 2050. This doesn't mean a modest, or even a drastic, improvement in fuel efficiency standards for automobiles. It means 100 percent of the cars on the road being battery powered or powered