Recent disaster scenarios and military operations have underscored the need for robotic ground vehicles that can navigate harsh terrain that is too dangerous for humans to enter. Such vehicles could be used to extract injured people, deliver supplies, or provide reconnaissance. The goal of project DIAS is to produce a group of robotic all-terrain vehicles (ATVs) that can still be operated as off-the-shelf ATVs. This paper describes the design and construction of a robotic retrofit for an ATV. The realization is a vehicle that can be remote controlled, navigate GPS waypoints, or be driven by a person.