The need to reduce oil consumption and greenhouse gases is driving a fundamental change toward more efficient, advanced vehicles, and fuels in the transportation sector. The paper reviews the current status of light duty vehicles in the US and discusses policies to improve fuel efficiency,...

In the United States, the federal government and several state governments are formulating or implementing policies aimed at reducing greenhouse gases emissions. In April 2009, the State of California adopted the Low-Carbon Fuel Standard (LCFS), a groundbreaking policy for reducing greenhouse...