Today’s cellular technologies allow users to access the Internet in a car or on a high-speed train, albeit the access bandwidth is far lower than that through a typical wired access technology such as Ethernet. Numerous new applications and services are under development for users of wireless technologies. Location based services (e.g, GPS navigation) and streaming media services are just two examples from the vast set of candidate applications and services. Not only researchers, but application and service developers could benefit from a testbed where they could experiment with mobility in the network.