Vincentric included 23 diesel vehicles in its alternative fuel analysis which is just about every consumer and commercial diesel currently on sale in the United States.

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Also, diesel was considered an alternative fuel and he wanted his brand to be thought of as an alternative to the clothing trends of the time.

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"Virtually every trucking company that we've talked to has understood that the savings involved with natural gas vehicles will be significant over what their fuel costs will be with diesel, " said Tom Kiley, an alternative fuel specialist for Freightliner Arizona.

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But, the board says, the 20 million gallons of diesel fuel saved from these alternative fuels was the equivalent of eliminating the emissions from 700, 000 cars.

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