IMAGE DISTRIBUTED FOR FRITO-LAY - Representatives from Frito-Lay discuss one of the 208 CNG tractors it will introduce onto routes by end of 2013 on Wednesday, June 19, 2013 in Beloit, Wis. When all ... more 
IMAGE DISTRIBUTED FOR FRITO-LAY - Representatives from Frito-Lay discuss one of the 208 CNG tractors it will introduce onto routes by end of 2013 on Wednesday, June 19, 2013 in Beloit, Wis. When all 208 CNG tractors are in service, Frito-Lay will eliminate 7,863 metric tons of carbon emissions, the equivalent of over 1,125 cars annually. (Photo by Darren Hauck/Invision for Frito-Lay/AP Images) less 
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Associated Press
Wed, Jun 19, 2013 5:08 PM EDT