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McDonald's converting to bio-fuels.

The fast food retailer, which has often been the target of criticism from environmental groups, is to power its fleet of 155 vehicles to run on fuel consisting of processed leftovers from its restaurants, cooking oil and rapeseed oil. According to Mathhew Howe, the company's vice president, this will result in a carbon saving of some 1,675 tonnes annually - the equivalent of taking 2,424 family cars off the roads.