This report examines the interplay between mobility, transport, and the use of Information and Communication Technology. The report identifies three important strands of research - within transportation, ICT, and urban geography - that have examined this interplay, and highlights relevant literature within these traditions. The diffusion of mobile ICT and possibilities of ubiquitous communication has partly rendered the original substition thesis obsolete. ICT and transport are primarily used as complementary modes of communication. The report concludes by adressing some further fields of research.