Agence France-Presse: The Canadian government pledged Thursday to reduce fuel consumption in new cars and light trucks in 2011, but environmentalists demanded a more stringent plan to reduce carbon emissions. Transport Minister Lawrence Cannon said the government may set fuel efficiency standards similar to those to be adopted in the United States in 2020 or introduce its own regulations. "We made a commitment to implement fuel consumption regulations for the 2011 model year that are …