Thursday 2 July at 09:59 : Jul.2 (GMM) Talks about 2010 with teams other than BMW-Sauber are currently taking place, German driver Nick Heidfeld has admitted

The 32-year-old, who despite racing in his tenth season in F1 is yet to achieve a single win, admitted recently that he does not have an assured contract with the Swiss-based team for next year

"I am talking with several teams -- not just BMW," Heidfeld is quoted as saying by the German-language Eurosport

He hints he wants to stay, despite BMW's lack of competitiveness this season. "Together we have achieved a lot compared to other new teams."nnRumoured as his possible replacement at the team next year is Heidfeld's young countryman Nico Rosberg, who is out of contract at Williams and openly eyeing potentially vacant seats at works teams including BMW and McLaren

But Heidfeld, although with 160 grands prix already under his belt, is not ready to walk away from F1

"I still want to be world champion," he insisted, "even if it only happens when I am 40

"If you look at the past few years, drivers are staying until they are 38, 39, so I have a few years still in front of me," added Heidfeld