Original sentence: A proposed 500,000 seat oval is under consideration according to Chinese government officials.However, this will not be completed until 2012 so if the event occurs in 2011 it will be a street race for a year.The IRL is exploring a future race in Qingdao, China for either 2011 or 2012
Edited sentence: A 2011 event would be a street race, and move to a proposed 500,000-seat oval for 2012.A revival of Houston and a street race in Nashville were also rumored by Robin Miller.A revival of the Cleveland race was possible for 2010.An agreement has been signed with the city of Long Beach to extend the Toyota Grand Prix of Long Beach to 2015 with an option through 2020.Barber Motorsports Park signed a three-year deal through 2012.City officials look to extend the contract through 2014.Existing events at Texas, Kentucky, and Sonoma would all continue, with Kentucky looking to move to the coveted Labor Day weekend date.Following the 2008 unification, former Champ Car tracks including Mexico City, Road America, Laguna Seca and Cleveland have been rumored, but were not added to the 2010 schedule.Infineon Raceway signed an extension through the 2011 season.Initially, it appeared unlikely, due to financial reasons, but came back under consideration in July.Iowa Speedway is finalizing a two-year extension through 2011.It would have involved a unique twin race weekend, with one race Friday night on a new oval layout, and a second race on the traditional road course layout.Las Vegas has been suggested as the season finale, and would be coupled with the awards banquet at the Palms Casino Resort off The Strip.New Hampshire track management had already publicly expressed interest individually in an IndyCar Series race.Petersburg will continue through 2013.SMI offered the IRL a five-facility deal for the 2009 season.The Honda Grand Prix of St.The Milwaukee Mile was extended through 2012, however, mounting debt for the promoter has put the 2010 running in doubt, and the track may close permanetly.The deal did not come to fruition for 2009 or 2010 or 2010.The deal included adding Las Vegas and Loudon back the schedule (they are both former IRL tracks).The league is exploring a race in Qingdao, China for either 2011 or 2012.when reports surfaced that The Milwaukee Mile was in financial trouble