From eurosport.yahoo.com :

Two of the remaining five races in this season's ChampCar World Series have been cancelled.   The final race, scheduled for Phoenix on December 2, has been cancelled due to a lack of sponsor support. The race was to have been run on a newly constructed downtown street circuit. "We obviously are disappointed that the organisers of Grand Prix Arizona cancelled their event," Champ Car president Steve Johnson said. Another new event tentatively scheduled in China has been postponed until 2008. "The failure of our previous China promoter - since replaced - to materially comply with our agreement forced us to miss our May date, and we have been unable to secure an appropriate 2007 replacement date with our new promoter," added Johnson. Sunday's inaugural race in Assen will be followed by a race at Surfers Paradise, Australia in October and November 11's finale in Mexico.

Lack of sponsor support ?

Oops - is ChampCar going down the drain ?