Dr. Frederick P. Stutz is Emeritus Professor of Geography at San Diego State University. He received his Ph.D. at Michigan State University, his M.A. at Northwestern University, and B.A. at Valparaiso University. His research interests include Urban Traveler Behavior, GIS Disaster Evacuation of City Traffic, and U.S.-Mexican Border Area Travel Needs Assessment. He is currently working on a project involving Energy and Travel Sustainability--Space-Time Utility Measures for Urban Travel Purposes. Barney Warf is Professor of Geography at the University of Kansas. He received his Ph.D. at the University of Washington in 1985. His current areas of research are political economy, social theory, producer services, financial markets, telecommunications, the geography of cyberspace, military spending, and international trade. He has authored or edited 5 books, 2 encyclopedias, and 100 journal articles.