Formula One supremo Bernie Ecclestone has questioned the likelihood of a grand prix in Austin, Texas next year.
The Englishman, who recently turned 81, originally stated that by 2013 there will be two races in the United States.
"Austin? I wouldn't want to put my money down that that will happen. I hope it will and we are doing our best to make it happen, but I wouldn't want to say yes," he told Reuters at the Abu Dhabi Grand Prix.
Ecclestone did however confirm that a street race in New York is going ahead from 2013, adding: "For New York, no problem at all."
This weekend's race in the United Arab Emirates is the penultimate meeting of the 2011 season.
