Founding Director, Institute of Transportation Studies, and Distinguished Blue Planet Prize Professor of Civil Engineering and Environmental Science and Policy, University of California, Davis. Adviser to automotive and energy companies, environmental groups and national governments. Member of the Board, California Air Resources Board. Former Chairman of Executive Committee and standing committees on alternative fuels and sustainability for US Transportation Research Board. Author of 250 technical articles and reports and 12 books, including Two Billion Cars (2009) and Three Revolutions: Steering Automated, Shared, and Electric Vehicles to a Better Future (2018).