VIVAGr is a graphical-oriented, real-time visualization tool for vehicular ad-hoc network connectivity graphs. It enables the effective synthesis of structural, topological, and dynamic characteristics of VANnet graphs, with a variety of parameters that affect the characteristics of a vehicular ad hoc network (wireless range, mobility models, road-network topology, market penetration ratio, and exhibited interference). The tool represents all active connections in real-time mode using mobility traces using a visual encoding syntax to represent semantic meanings and the effect of mobility and topology on vehicular network specific properties.