America currently uses nearly 20 million barrels of oil per day--enough to fill more than six of the world’s largest supertankers. More than two-thirds of this oil is used to fuel our cars and trucks, which drive enough miles each day to circle the globe more than 331,000 times. Meeting this demand for oil makes America less secure. We rely on imports for more than 60 percent of our overall oil consumption, leaving us dangerously dependent on other nations. Meanwhile, our oil-fueled transportation system accounts for nearly a third of our total global warming pollution. Technology advancements such as hybrid vehicles and better batteries can decrease our oil use and transportation emissions, but groundbreaking new research sponsored by NRDC and leading transportation experts shows that we must deploy additional strategies to overcome this challenge.