This year, the National Truck Equipment Association partnered with CALSTART, the leading clean transportation technologies and solutions consortium, to host the Green Truck Summit, a three-year-old educational forum covering clean fuels initiatives and insights into how the work truck market is being impacted by the growing interest in green technology. Right next to the ASE booth was the US Department of Energy Clean Cities exhibit. Clean Cities is a government-industry partnership designed to reduce petroleum consumption in the transportation sector. Transportation history is full of examples where the industry met the challenge of changing technology. This time is no different, and those changes are coming. The payoff in clean air and reduced dependence on foreign oil is too compelling to ignore.