David Friedman, research director, Clean Vehicles Program, Union of Concerned Scientists (UCS), Washington, D.C. He is the author or coauthor of more than 30 technical papers and reports on advancements in conventional, fuel cell, and hybrid electric vehicles and alternative energy sources with an emphasis on clean and efficient technologies. Before joining UCS in 2001, he worked for the University of California-Davis (UC Davis) in the Fuel Cell Vehicle Modeling Program, developing simulation tools to evaluate fuel cell technology for automotive applications. He worked on the UC Davis FutureCar team to build a hybrid electric family car that doubled its fuel economy. He previously worked at Arthur D. Little researching fuel cell, battery electric, and hybrid electric vehicle technologies, as well as photovoltaics. He served as a member of the NRC Panel on the Benefits of Fuel Cell R&D of the Committee on Prospective Benefits of DOE’s Energy Efficiency and Fossil Energy R&D Programs, Phase 1; on the Panel on Benefits of DOE’s Light-Duty Hybrid Vehicle R&D Program; and as a member of the NRC Committee on National Tire Efficiency. He earned a bachelor’s degree in mechanical engineering from Worcester Polytechnic Institute and is a doctoral candidate (2007) in transportation technology and policy at UC Davis.

Susan Fuhs is president, Conundrum Consulting. Previous positions include general manager, Astro Aerospace; general manager, GE Hybrid Power Generation Systems; director, New Ventures, Honeywell International; technology policy analyst, RAND; and project engineer, Advanced Applications, AlliedSignal Aerospace. Dr. Fuhs’s technical and business experience has focused on overcoming barriers to the development and implementation of advanced technologies. Her experience with fuel cells includes developing fuel cell systems for stationary and transportation applications, including fuel cells for the Partnership for a New Generation of Vehicles; developing fuel cell marketing and business plans; and managing the solid oxide fuel cell subsidiary of General Electric Power Systems. She currently consults in strategic planning, new product development, business development, and technology roadmapping. She is a past board member, National Hydrogen Association, and past chairperson, Space Systems Technical Committee, American Institute of Aeronautics and Astronautics. She has a Ph.D. and M.S. in mechanical engineering and a B.S. in chemical engineering from the California Institute of Technology and an MBA from the Anderson School of the University of California, Los Angeles.

Judi Greenwald is the director of Innovative Solutions at the Pew Center on Global Climate Change. She oversees the Solutions program and develops mechanisms for learning about and promoting innovative solutions, including research, publications, Web-based information and databases, and workshops. Ms. Greenwald focuses on technological innovation, business solutions, and state and regional solutions. Ms. Greenwald has over 20 years of experience working on energy and environmental policy. Prior to coming to the Pew Center, she worked as a consultant, focusing on innovative approaches to solving environmental problems, including climate change. She also served as a senior advisor on the White House Climate Change Task Force. As a member of the professional staff of the U.S. Congress Energy and Commerce Committee, she worked on the 1990 Clean Air Act Amendments, the 1992 Energy Policy Act, and a number of other energy and environmental statutes. She was also a Congressional Fellow with then-Senate Majority Leader Robert C. Byrd, an environmental scientist with the U.S. Nuclear Regulatory Commission, and an environmental engineer and policy analyst at the Environmental Protection Agency (EPA). Ms. Greenwald has a B.S. in engineering, cum laude, from Princeton University and an M.A. in science, technology, and public policy from George Washington University. She has published papers on the future of water quality monitoring, worker and community adjustment to climate change policy, a multimedia approach to radon, environmental policies affecting the development of newer coal technologies, and the implications for air quality analysis of extended lifetimes for coal-fired boilers.

Robert L. Hirsch is senior energy advisor, Management Information Services, Inc. (MISI). Formerly he was senior energy program advisor at SAIC. His past positions include senior energy analyst with the RAND Corporation; executive advisor to the president of Advanced Power Technologies, Inc.; vice president, Washington Office, Electric Power Research Institute; vice president and manager, Research and Technical Services Department, ARCO Oil and Gas Company; chief executive officer of ARCO Power Technologies, a company that he founded; manager, Baytown Research and Development Division; general manager, Exploratory Research, Exxon Research and Engineering Company; assistant administrator for Solar, Geothermal, and Advanced Energy Systems (Presidential appointment); and director, Division of Magnetic Fusion Energy Research, U.S. Energy Research and Development Administration. He has served on numerous advisory committees, including as a member of the DOE Energy Research Advisory Board and a number of DOE national laboratory advisory boards. He has served on several NRC committees, including the one that wrote the report Fuels To Drive Our Future (1990), which examined the economics and technologies for producing transportation fuels from U.S. domestic resources; the Committee on Alternatives and Strategies for Future Hydrogen Production and Use; and was chairman of the Committee to Examine the Research Needs of the Advanced Extraction and Process Technology Program. He served as chairman of the Board on Energy and Environmental Systems and is a National Associate of the Academies. He brings expertise in a number of areas of science and technology and business related to energy production and consumption, research and develop-

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