| Executive Summary | vii | 
		
			| 1 | Introduction | 1 | 
		
			|  | Purpose of Report | 1 | 
		
			| Scope of Report | 1 | 
		
			| Data Sources and Quality | 2 | 
		
			| Contents of Report | 3 | 
		
			| 2 | Alternative Fueled Vehicle Inventory | 5 | 
		
			|  | Background | 5 | 
		
			|  | Types of Alternative Transportation Fuels and 
			Alternative Fueled Vehicles | 7 | 
		
			|  | Estimated Vehicle Stocks in 1992, 1993, 
			and 1995 | 7 | 
		
			| Estimation Methods and Data Sources | 7 | 
		
			| Alternative Fueled Vehicles by Fuel 
			Type, Ownership, Weight Class, 1992 | 7 | 
		
			| Regional Distribution of AFV's for 1993 
			and 1995 | 10 | 
		
			| Trends in Alternative Fueled Vehicle 
			Inventories, 1992 to 1995 | 11 | 
		
			|  | Liquefied Petroleum Gas (LPG) Vehicles | 11 | 
		
			| Compressed Natural Gas (LPG) Vehicles | 11 | 
		
			| Liquified Natural Gas (LNG) Vehicles | 12 | 
		
			| Methanol (M85) Vehicles | 13 | 
		
			| Methanol Neat (M100) Vehicles | 13 | 
		
			| Ethanol (E85) Vehicles | 13 | 
		
			| Ethanol (E95) Vehicles | 13 | 
		
			| Electric Vehicles | 14 | 
		
			| 3 | Alternative and Replacement Fuel 
			Consumption | 17 | 
		
			|  | Background | 17 | 
		
			| Estimated Vehicle Fuel Consumption in 
			1992, 1993, and 1995 | 17 | 
		
			|  | Estimation Methods | 17 | 
		
			| Alternative Fuel Consumption by Fuel 
			Type, Vehicle Ownership, and Weight Class, 1992 | 17 | 
		
			|  | Fuel Consumption by Weight Class | 20 | 
		
			| Federal Alternative Fuel Consumption | 20 | 
		
			| State and Local Government Alternative 
			Fuel Consumption | 20 | 
		
			| Privately Owned Alternative Fueled 
			Vehicle Consumption | 21 | 
		
			| Oxygenate Consumption in 1992 | 21 | 
		
			| Alternative Fuel Consumption Estimates 
			by Fuel Type, and by Vehicle Ownership and Weight Class, 1993 and 
			1995 | 22 | 
		
			|  | Fuel Consumption by Weight Class | 22 | 
		
			| Federal Fuel Consumption | 22 | 
		
			| State and Local Government Alternative 
			Fuel Consumption | 24 | 
		
			| Privately Owned Alternative Fueled 
			Vehicle Consumption | 24 | 
		
			| Oxygenate Consumption in 1993 and 1995 | 24 | 
		
			| Regional Distribution of Alternative and 
			Oxygenate Fuel Consumption for 1993 and 1995 | 25 | 
		
			|  | Alternative Fuels | 25 | 
		
			|  | Oxygenates | 26 | 
		
			| 4 | Greenhouse Gas Emissions | 29 | 
		
			|  | Background | 29 | 
		
			| Emission Estimates | 29 | 
		
			| Direction of Future Greenhouse Gas 
			Emissions Estimates | 33 | 
		
			| Appendices | 
		
			| A | U.S. Census Region Map | 37 | 
		
			| B | Estimation Methods and Data Quality | 39 | 
		
			| C | The Greenhouse Effect | 45 | 
		
			| D | Fuel Cycle and Energy Efficiency 
			Considerations | 49 | 
		
			| E | Biomass Land-use Impacts on Greenhouse 
			Gases | 55 | 
		
			| F | List of Converters, Original Equipment 
			Manufacturers, and Training Centers | 57 | 
		
			| Glossary | 83 | 
		
			| LIST OF TABLES | 
		
			| Table 1 | Estimated Alternative Fueled Vehicles in 
			Use by Fuel, 1992, 1993, and 1995 | 8 | 
		
			| Table 2 | Estimated Methods and Sources for 
			Privately Owned and State and Local Government Vehicle Counts | 9 | 
		
			| Table 3 | Estimated Alternative Fueled Vehicles in 
			Use by Fuel, Ownership, and Weight Class, 1992 | 10 | 
		
			| Table 4 | Estimated Alternative Fueled Vehicles in 
			Use by Fuel, Ownership, and Weight Class, 1993 | 11 | 
		
			| Table 5 | Projected Alternative Fueled Vehicles in 
			Use by Fuel, Ownership, and Weight Class, 1995 | 12 | 
		
			| Table 6 | Estimated Privately Owned and State and 
			Local Government Alternative Fueled Vehicles in Use by Census 
			Region, 1993 | 14 | 
		
			| Table 7 | Projected Privately Owned and State and 
			Local Government Alternative Fueled Vehicles in Use by Census 
			Region, 1993 | 14 | 
		
			| Table 8 | Consumption of Vehicle Fuels, 1992, 
			1993, and 1995 | 18 | 
		
			| Table 9 | Consumption of Vehicle Fuels, 1992 | 19 | 
		
			| Table 10 | Consumption of Alternative Fuels by 
			Vehicle Weight Classification, 1992 | 20 | 
		
			| Table 11 | Consumption of Alternative Fuels by 
			Vehicle Ownership Class, 1992 | 21 | 
		
			| Table 12 | Consumption of Alternative Fuels by 
			Vehicle Ownership Class, 1992 | 21 | 
		
			| Table 13 | Consumption of Alternative Fuels by 
			Vehicle Weight Classification, 1993 and 1995 | 24 | 
		
			| Table 14 | Consumption of Alternative Fuels by 
			Vehicle Ownership Class, 1993 and 1995 | 25 | 
		
			| Table 15 | Non-Federal Consumption of Liquefied 
			Petroleum Gases and Natural Gas by Region, 1993 and 1995 | 27 | 
		
			| Table 16 | Consumption of Alcohol Fuels by Region, 
			1993 and 1995 | 27 | 
		
			| Table 17 | Carbon Dioxide (CO2) 
			Emissions per Vehicles Mile | 30 | 
		
			| Table 18 | Methane (CH4) Emissions per 
			Vehicle Mile | 31 | 
		
			| Table 19 | Nitrous Oxide (N2O) Emissions 
			per Vehicle Mile | 32 | 
		
			| Table 20 | Nitrogen Dioxide (NO2) 
			Emissions per Vehicle Mile | 33 | 
		
			| Table 21 | Carbon Monoxide (CO) Emissions per 
			Vehicle Mile | 34 | 
		
			| Table 22 | Total Fuel-Cycle Emissions from Gasoline 
			and from Alternative and Replacement Fuels | 35 | 
		
			| Table B1 | Alternative Fueled Vehicles Distribution 
			by Vehicle, Fuel, Ownership, and Classification, 1995 | 41 | 
		
			| Table B2 | Typical Conventional Vehicle 
			Characteristics | 42 | 
		
			| Table B3 | Original and Adjusted Lower Heating 
			Values of Conventional and Replacement Fuels | 43 | 
		
			| Table C1 | Direct Global Warming Potentials | 48 | 
		
			| Table D1 | Energy Efficiency for Stages in 
			Providing Transportation Fuels to Consumers | 52 | 
		
			| Table D2 | Energy Consumption for Stages in 
			Providing Transportation Fuels to Consumers | 53 | 
		
			| Table F1 | Companies Performing Conversions by 
			State | 59 | 
		
			| Table F2 | Original Equipment Manufacturers by 
			State | 77 | 
		
			| Table F3 | Training Centers by State | 80 | 
		
			| LIST OF FIGURES | 
		
			| Figure 1 | Alternative Fuel Vehicle Configurations 
			and Fuel Types | 6 | 
		
			| Figure D1 | Entire Fuel Cycle for Transportation 
			Fuels | 55 |