Movement is made up of time and space. It is the spatialization of time and temporalization of space. Any consideration of movement (and mobility) that does not take time and space into account is missing an important facet. Time and space, as Kant reminded us, are the fundamental axes around which life revolves—the most basic forms of classifi cation. Certainly any material object has to have coordinates in time and space. Movement, as the displacement of an object from A to B, involves a passage of time and, simultaneously, a traversal of space. Time and space, however, cannot be simply taken for granted in the consideration of movement. Time and space, are both the context for movement (the environment of possibility for movement to occur) and a product of movement. Moving people and objects are agents in the production of time and space. Perhaps the most well-known formulation of this is time–space compression—the effective shrinking of the globe with ever-increasing mobility at speed enabled by innovations in transportation and communications technology. Thus Marx was able to write of the annihilation of space by time. The success of railroad technology in the nineteenth century and the new modes of mobility that it enabled meant that things were, for all practical purposes, a lot closer.9 While the abstract idea of movement is composed of equally abstract notions of absolute time and space, the notion of mobility I want to propose here, as a thoroughly social facet of life imbued with meaning and power, is composed of elements of social time and social space.