The article discusses the 2014 Green Truck Summit, held in conjunction with National Truck Equipment Association's The Work Truck Show 2014, based on clean vehicle technologies and alternative fuel trends. Topics discussed include views of David C. Rhoa, president of distribution services company Lake Michigan Mailers, on propane autogas as a light- and medium-duty fleet alternative fuel, and views of Robert Pachla, president at automotive product supplier Powertrain Integration, on propane.