Robert Cervero is Professor Emeritus of City and Regional Planning at the University of California, Berkeley. He is the author of six books in the urban transportation field as well as numerous articles and research publications. He was a contributing author to the recent IPCC (International Panel on Climate Change) Fifth Assessment and UN-Habitat's Global Report on Sustainable Mobility and in 2013 was ranked among the top 100 City Innovators Worldwide by UMB's Futures Cities. Erick Guerra is Assistant Professor of City and Regional Planning at the University of Pennsylvania, where he teaches courses in transportation planning and quantitative planning methods. He has published a dozen articles on the relationship between transportation infrastructure, land use, urban development, and travel behavior. Stefan Al is Associate Professor of Urban Design at the University of Pennsylvania. He has published several books, including Factory Towns of South China: An Illustrated Guidebook and The Strip: Las Vegas and the Architecture of the American Dream. As a practicing architect and urban designer, he has worked on renowned projects such as the Canton Tower in Guangzhou.