The projected average fuel efficiency of light-duty vehicles, with the model year 2010 is shown on this map for the populated areas. Light-duty vehicles include all cars and light trucks. The projections were produced based on the business-as-usual assumption, which assumes that there are no major policy changes in the 1990 to 2010 period that would affect new light vehicle preferences. There are significant spatial variations throughout Canada. The areas with the high average fuel efficiency are urban areas. Because vehicles consume a substantial part of energy in Canada, average vehicle fuel efficiency is an important indicator for greenhouse gas emission and climate change policy making. The lower the fuel efficiency, the higher the emission per vehicle, and, consequently, the greater the contribution to greenhouse gases.