Nick Heidfeld has revealed that he had no prior knowledge about BMW's decision to withdraw from Formula 1 at the end of the year, following the company's announcement on Wednesday.
The German, who has driven for the BMW Sauber team since its inception in 2006, and who drove for Williams when it was powered by BMW engines in the year prior to that, told his website that the news had come as a complete surprise to him.
"BMW's decision no longer to compete in Formula 1 was totally unexpected," he said. "I feel very sorry for the members of the team with whom it has been my privilege to work over the years. I would like to thank all of them for their tremendous support and for everything we have achieved together."
The 32-year-old added that he was determined to continue racing in F1 and was negotiating with other teams.
"I'm not going to lose sight of my ambition to reach the top in Formula 1," he said. "I'll be doing my best to support the team and ensure that we get the best possible finish to the season.
"As far as my personal future is concerned, we'll now be continuing discussions under these changed circumstances."