It is day three of the Clean Cities Conference in Phoenix, and the convention center is packed with conference goers, all here for the same cause. With dozens of sessions, exhibits, ceremonies and receptions, people attending the conference are promised hours of information and entertainment. The crowds of people filling the convention center cannot be filed into one specific stereotype, as business people, hippies, yuppies, truckers and more can be seen in all directions. This just goes to show that the topic of alternative fuels is one which appeals to many different demographics.

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