From IURD:
Speaker: John Pucher, professor in the School of Planning and Public Policy at Rutgers University in New Jersey
Professor Pucher argues that cycling and walking are the most environmentally, socially, and economically sustainable of all transport modes. He then provides an international overview of cycling levels and trends among many different countries in the developed world, noting that even technologically advanced countries with high per capita income and high levels of car ownership can have high levels of walking and cycling and much lower levels of car use than typical in the USA, Canada, and Australia.