On 12 October 2009, a Qatar Airways Airbus A340-600 conducted the world's first commercial passenger flight using a mixture of kerosene and synthetic Gas-to-Liquid fuel in its flight from London's Gatwick Airport to Doha. On 15 July 2011 Lufthansa has launched a 6-month biofuel trial on regular scheduled flights. The route selected for the test flights is Hamburg-Frankfurt-Hamburg and it will be covered by an Airbus 321 with the registration D-AIDG. JBUFF (Joint Battlespace Use Fuel of the Future) fuel Future blends and fuel formulations may result in a JBUFF (Joint Battlespace Use Fuel of the Future) or a single battlespace fuel that can be used in both diesel and jet fuel application. A JBUFF fuel will allow for rapid deployment and logistic enhancement for military and emergency aid environments where various types of equipment can be operated with one fuel in place of several types of fuel. ISFuel Incorporated received a patent for the formulation of fully synthetic joint fuel. Initial consumers In addition to their certification efforts, the United States Air Force has publicly stated their intention to fuel half of their domestic US flights with synthetic fuel by 2016. The commercial aviation industry, working with potential suppliers via CAAFI, is also pushing hard to secure sources of fuel. The United States Department of Energy projects that domestic consumption of synthetic fuel made from coal and natural gas will rise to in 2030 based on a price of $57 per barrel of high sulfur crude. Non-transportation "synfuel" Numerous American companies (TECO, Progress Energy, DTE Energy, Marriott) have also taken advantage of coal-based synfuel tax credits established in the 1970s, although many of the products qualifying for the subsidy are not true synthetic fuels. The coal industry uses the credit to increase profits on coal-burning powerplants by introducing a "pre-treatment" process that satisfies the technical requirements, then burns the result the same as it would burn coal. Sometimes the amount gained in the tax credit is a major factor in the economic operation of the plant. The synfuel tax credit has been used primarily in this manner since the cheap gas prices of the 1980s stopped any major efforts to create a transportation fuel with the credit, and its continuation is seen as a major "pork project" win for coal industry lobbyists, costing $9 billion per annum. The total production of such synfuels in the United States was an