The Indianapolis Motor Speedway has held the event since 2000 but it has a chequered past. The 2002 and 2005 events were spoiled by race-fixing and a mass walkout by many teams.
The circuit’s original contract expired last year and George only agreed to a one-year extension.
Ecclestone once more made disparaging remarks about the importance of the race in the run-up to the 2007 event. This is a tactic he regularly uses against Silverstone and one he turned on Sepang earlier this year.
America has a large number of other road circuits but apparently none of them are very attractive to Ecclestone .
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