This paper introduces DRIVE, a reconfigurable demonstrator that will allow for experimental validation of vehicular networking research, as well as proof of concept and realistic performance studies of advanced services for vehicular users. The testbed features an OSGi-based software platform that allows easy service development through bundles. DRIVE’s hardware platform is based on a carPC, wireless sensors and rooftop antennae and uses wireless and mobile technologies, e.g., WiFi, UMTS and Bluetooth. On top of these platforms, a hybrid communication node enables always-on, QoS-aware connectivity by using the Always Best Connected concept, and a service platform enables seamless car, driver and passenger services. Categories and Subject Descriptors C.2.1 (Wireless communication), H.5.2 (Interaction styles), J.0 (Computer Applications). General Terms Design, Experimentation, Human Factors, Verification. Keywords Vehicular networks, demonstrator, VANET, added-value services, wireless...