No US Grand Prix next year
The United States Grand Prix is off the Formula One calendar for 2008.
Indianapolis Motor Speedway chief executive Tony George has failed in his efforts to reach an agreement with supremo Bernie Ecclestone over a new contract.
George said: "After several discussions, Bernie Ecclestone and I were unable to agree how to keep Formula One in Indianapolis for the near term. However, we have agreed to leave the door open for a potential future date."
Ecclestone and George twice met during last month's USGP at Indy to discuss the prospect of another deal for the circuit.
The original one that brought the grand prix back to America in 2000 expired in 2006, when a one-year extension was signed.
George had hoped to secure the future of the race at Indianapolis for several years, imposing a deadline of Thursday by which time all parties had to agree.
George added: "It has been a pleasure having the United States Grand Prix at Indianapolis. I hope that as we approach our centennial era at the Indianapolis Motor Speedway, an opportunity might present itself which would allow its return."
