Hinsdale Greyhound Park, a dog racing track in New Hampshire that also operated a rebate shop, abruptly filed for bankruptcy on Monday and shut its doors, according to a statement from the track's owner.\nJoseph Sullivan, the track's president and chief executive officer, said in the statement that the track's business has deteriorated significantly over the past year because of the spike in gasoline prices and the nationwide economic problems. The greyhound track has been seeking slot machines for several years.\nAccording to the New Hampshire Union Leader, track officials turned in Hinsdale's license on Monday. \nHinsdale held 50 days of live greyhound racing this year. Track officials have previously said that the live race meet was unprofitable, and that the track was able to stay afloat because of its simulcasting operations. That included the rebate shop, which gave customers cash back on their bets, including those on Thoroughbred simulcasts.\nThe status of bettors' accounts at Hinsdale is unclear. Calls to Hinsdale late on Monday were not answered, and the track's website had been taken down.