The Boeing Business Jet dubbed BBJ is a multipurpose plane. It can go from a luxury business airliner to a full out transport plane in less then 8 hours. Clientele like heads of state, corporations and private, uber-rich individuals who want to quickly change from transporting VIPs, staff or troops to delivering disaster-relief supplies or configuring for medical evacuation. With the new Overhead Space Utilization kit that adds 75 square meters of space, the plane offers room for transporting tools, race cars or equipment for touring bands and musicians. The OSU kit is installed post production above the main cabin ceilings between doors three and five and includes stairs from the main deck to the space above. BBJ owners receiving their airplanes after mid-2011 will reduce fuel consumption by 2 percent through a combination of airframe and engine.