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Formula one is this weekend finally ending a five-year hiatus by reviving the US grand prix at the brand new Circuit of the Americas in Austin, Texas.
New Jersey was set to join the schedule next year, but the street race amid the Manhattan skyline could now happen in 2014.
Asked by the Associated Press if LA could be next, Ecclestone said: "Maybe we can do something (there) in the future."
Tavo Hellmund, the original mastermind of this weekend's US grand prix, has admitted he is now pushing to revive the Mexican grand prix at the old Mexico City track.
"The Americas are probably big enough to have five or six grands prix," he told the Austin American Stateman newspaper.