AmeriGas Propane is more than doubling its propane autogas medium-duty fleet. The company reported it purchased 50 new Roush CleanTech Ford F-550s equipped with cranes to deliver propane tanks to customer sites across the nation – in addition to the 35 that were deployed at the end of 2013.AmeriGas will announce its autogas fleet growth during the NPGA Southeastern Convention and International Propane Expo in Atlanta. “AmeriGas’ fleet is one of the largest in North America. We are excited to transition to a cleaner, domestic and value-priced alternative fuel,” corporate fleet manager Jay Massey said. “As a propane marketer, we strongly believe in the autogas initiative.”According to AmeriGas, its autogas fleet demonstrates the viability of propane as an on-road vehicle fuel, lessens noise in neighborhoods being serviced, and lowers emissions. Over the lifetime of the Ford F-550 vehicles, more than 12.7 million pounds of carbon dioxide will be eliminated from AmeriGas’ total carbon footprint, the company said.“By fueling with the product it supplies, AmeriGas is proving to its millions of customers that propane as an engine fuel is realistic and being used today in their communities,” said Todd Mouw, vice president of sales and marketing for Roush CleanTech. “Propane autogas is a readily available, abundant transportation fuel source with lower operation and ownership costs. And AmeriGas is at the forefront of implementation.”