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Double Duty also referred to as the Indy-Charlotte Double or Memorial Day Double,〔 refers to an accomplishment in automobile racing in which a driver competes in the Indianapolis 500 and Coca-Cola 600 in the same day. The feat was first attempted by John Andretti on May 29, 1994. In 2001, Tony Stewart became the first and only driver to date to successfully complete all 1,100 miles of both races in the same day. The two races, organized by separate sanctioning bodies—IndyCar and NASCAR respectively—are held on Memorial Day weekend, and are considered two of the biggest annual events on the U.S. motorsports calendar. The "Double Duty" calls for a driver to compete at the Indianapolis Motor Speedway in Speedway, Indiana in the early afternoon, then take an airplane to Concord, North Carolina to race at Charlotte Motor Speedway in the evening. The feat is considered difficult on face, as well as physically demanding and mentally draining. It is somewhat similar in concept to the established discipline of endurance racing, however, the driver is expected to drive both races in their entirety without the help of a relief driver. Considerable media attention usually spotlights a driver who attempts the "Double Duty." The concept dates back specifically to 1994, but as far back as the 1960s, drivers have attempted to compete in both events when they were held on different days of the week. Also during the 1960s and 1970s, a handful of drivers raced at the Indianapolis 500 while maintaining a full-time schedule in Formula One. This would require them to travel between Indianapolis and Europe during the month of May, usually between Indy and Monaco, on an equally as demanding schedule. Four drivers (John Andretti, Robby Gordon, Tony Stewart and Kurt Busch) have attempted the Indianapolis/Charlotte "Double Duty" feat. Of these, Tony Stewart's 2001 effort stands as the best combined result. He finished 6th at Indianapolis and 3rd at Charlotte, completing all 1,100 miles. Among the handful of drivers in the 1960s and 1970s that attempted "crossovers," Donnie Allison competed in both events in a year in which they were held on successive days. To date, the most recent attempt was made by Busch in 2014. He finished in 6th place at the Indianapolis 500, and was the fastest rookie. However, he dropped out of the Coca Cola 600 with a blown engine mid-race. He completed 906 miles. ==Logistics== The Indianapolis 500 is part of the Verizon IndyCar Series, and the Coca-Cola 600 is part of the NASCAR Sprint Cup Series. Both races are held, weather permitting, on the Sunday of Memorial Day weekend. The Indy 500 at the Indianapolis Motor Speedway is traditionally scheduled in the afternoon, while the Coca-Cola 600 at Charlotte Motor Speedway is held as a night race. Since the events are not scheduled to overlap, this allows a driver a small window to travel between venues. Such an accomplishment can be grueling and physically exhausting. It calls for a driver to race for over seven hours in two entirely different disciplines of racing cars. Along with a 430-mile airplane flight, and severe time constraints, the driver has time for only a brief rest aboard the aircraft where he normally takes on IV fluids, and is checked out by a physician. Weather plays a significant factor in the logistics of "Double Duty." If weather cooperates and there is no rain at either venue, delays are usually minimal. However, if rain delays one of the races (particularly Indianapolis), it can significantly disrupt or completely cancel the opportunity for the attempt. According to NASCAR rules all drivers are required, without exception, to attend in person the pre-race drivers' meeting or suffer a grid penalty. If a driver misses the meeting for any reason, he is forced to start from last position on the grid. The meeting normally takes place approximately two hours before the start of the race (Coca-Cola 600), and under the circumstances of "Double Duty," the driver would have little or no opportunity to attend in-person. Despite attempts over the years to lobby the officials, including garage area petitions, and use of a video-conference device, drivers attempting "Double Duty" have all been required to start at the back of the grid for the Coca-Cola 600. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Double Duty (auto racing)」の詳細全文を読む スポンサード リンク
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