A University of Michigan professor says improving the fuel efficiency of cars is a good thing, but he warns that alternative fuel vehicles are not the greenhouse gas "silver bullet" some make them out to be. WEMU's Bob Eccles has the story.
A University of Michigan professor says improving the fuel efficiency of cars is a good thing, but he warns that alternative fuel vehicles are not the greenhouse gas "silver bullet" some make them out to be. WEMU's Bob Eccles has the story.