Only one of the six stadiums under construction is on schedule.
Though sales are slow, construction continues on schedule.
Rio's Games are more compact and the stadium construction is on schedule, she says: "It's definitely better.
Steve Sexton, president of the Austin circuit, said: "Our funding is secured and construction is on schedule, so we don't understand these comments.
The organising committee says construction is on schedule - but the cost has increased to $50 billion 377 billion euros), making it more expensive than the summer Olympics in Beijing, and three times the cost of the London games last year.
Steve Sexton, president of the Austin circuit, said in response to Ecclestone's comments: "Our funding is secured and construction is on schedule, so we don't understand these comments.
In 1964, construction was still on schedule with 58 mile complete and an additional 71 mile under construction.
He wonders if construction will stay on schedule, allowing the entire Banks to reopen in 2014.
Next week, if construction is completed on schedule — something that seems in question, given how much work is left — she and three other artists will begin living on the barge for five months, docking at various locations in the five boroughs, where it will be open to the public, beginning with South Street Seaport.
"It has been a worry for us and we must now make sure the construction process remains on schedule and if it does we will be fine".
