 This was lower than hoped for by Champ Car and the race organizers leaving the future of the Portland race in doubt as the race's contract with Champ Car expired after the 2007 race.This was the last Champ Car race held at Portland, as the 2008 race was not absorbed into the IndyCar schedule.On October 12, 2017, it was announced that the IndyCar series will return to Portland during the 2018 Labor Day holiday weekend - Aug 31-Sept. 2, 2018.