In recent years many conventional public displays were replaced by electronic displays hence enabling novel forms of advertising and information dissemination. This includes mainly stationary displays, e.g. in billboards and street furniture, and currently first mobile displays on cars appear . Yet, current approaches are mostly static since they do not consider mobility and the context they are used in. In our work we explore how mobile public displays, which rapidly change their own context, can gather and process information about their context. Data about location, time, weather, people in the vicinity etc. can be used to react accordingly by displaying related content.