Figure 1: Estimated Alternative-Fueled Vehicles in Use and Alternative Fuel Consumption. This line-graph shows that the estimated number of alternative fueled vehicles in use in the United States grew from about 250,000 in 1992 to about 430,000 in 2000. It also shows that consumption of alternative transportation fuels grew from about 230 million gasoline-equivalent gallons in 1992 to about 370 million gasoline-equivalent gallons in 2000.

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