Expanding markets for clean and efficient technologies will increase energy security and help reduce greenhouse gas emissions. But many promising technologies are still too expensive or face other obstacles to commercial deployment. Governments need to consider deployment policies to create...

This report identifies policy options and makes recommendations on market-oriented actions to promote the purchase of the most environmentally friendly vehicles. It assesses the impact of a wider use of low-emission vehicles, drawing on experience to date, research results and the responses to a...

Studies show that cars use significantly more fuel per kilometre than suggested by official test ratings. This publication presents an analysis of the fuel efficiency gap and examines technologies available that could reduce that gap and improve fuel economy. It examines such areas as engine and...