Peter Gordon is Professor Emeritus at the Sol Price School of Public Policy of the University of Southern California, where he taught and conducted research for 43 years. He received the PhD from the University of Pennsylvania in 1971. Gordon has authored or co-authored over 100 professional papers and research reports in refereed journals and anthologies. He is a Fellow of the Regional Science Association International. Gordon resides with his wife Pamela in Southern California. Joongkoo John Cho is Senior Transportation Modeler at the Southern California Association of Governments (SCAG), where he develops travel demand models, freight transportation models, and conducts socio-economic impact analyses. He received the PhD from the University of Southern California in 2013. John has authored or co-authored more than 30 peer-reviewed research papers and reports. He received several best paper awards for his contributions. He resides in Southern California with his wife, Suyeon and their children, Yein and Joshua.