"We've got speakers on biodiesel this year, on hybrid technology and natural gas. Some of our workshops relate to getting funding and grants for purchasing vehicles, alternative fuel, infrastructure and those type of things."
Smith says fleet managers not only want to know about cleaner technology, but also how to pay for it.
"There's all kinds of funding out there, there's tax credits and tax incentives in some of the energy bills, it's just a matter of doing your research and looking at the government agencies and seeing what's available."
For any fleet manager who missed this year's event, Smith says trade organizations often have valuable information and so does the federal government.
"If you go to the Department Energy website, the Clean Cities program, they've got a lot of very user friendly information, links to all the major players in the industries. They information on emissions and costs and case studies of other organizations that have done things with alternative fuel."
The Houston Galveston Area Council also has programs and information on cleaner air through cleaner fleets.