Heidfeld, Rosberg, keep quiet about F1 futures

(GMM) Both Nick Heidfeld and Nico Rosberg on Thursday were not keen to talk about their futures in F1.

The German pair, who drive respectively for BMW-Sauber and Williams, have enjoyed promising starts to the 2007 campaign, but both are reportedly not guaranteed seats next year.

Heidfeld, 29, is understood to have a contract 'option' to stay at BMW in 2008 but he has also been linked with a move to Toyota.

He said in Bahrain: "I am satisfied at BMW."

"Nick is in the form of his life and is doing a terrific job right now," his manager Werner Heinz added.

Heidfeld insisted he is not pushing BMW for an early decision about next year, despite reports suggesting the contrary.

"No, there is no specific time limit," he insisted. "It is still very early in the season — there is still plenty of time left."

Rosberg, meanwhile, earned the praise recently of Williams' technical director Sam Michael, amid suggestions that other teams might also have an eye on the former GP2 champion.

"That's a nice question to hear," he smiled on Thursday when asked about his promising future, "but I have nothing to say. I am with Williams and I hope that together we can progress as a team. I prefer to think about now than (think about) the future."