United Parcel Service Inc, the world's largest courier company, said it would buy 1,000 propane-fueled delivery trucks and install an initial 50 fueling stations in the United States at a total cost of about $70 million.
The propane fleet will replace gasoline- and diesel-fueled vehicles used largely in rural areas in Louisiana and Oklahoma, UPS said on Wednesday.
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UPS said it expected operations to begin mid-2014 and be completed early next year.
The company said it also planned to introduce propane-fueled vehicles in other U.S. states.