’We are frequently told that we live in an increasingly mobile world. This book is conceptual and empirical flesh on the bones of this observation. Larsen, Urry and Axhausen expertly reveal, through extensive and innovative research-on-the-move, how people produce mobile networks through the practice of moving, meeting and communicating both really and virtually. This is an excellent book which should be read by anyone interested in the mobility turn in the social sciences.’ Tim Cresswell, Royal Holloway, University of London, UK '... readable, thought-provoking window on social life in a mobile world.' Planning, Practice and Research Vol 22, no 2 May 2007 'I recommend this book to anyone interested in the latest theoretical discussion on forms of mobility, travel and social networking. The book provides a solid theoretical framework for developing research in this area and considers a broad range of literature. Furthermore, the research design of the study was exemplary and could lay the foundation for much future work.' Association of American Geographers