
Formula One chief Bernie Ecclestone casts doubt on the participation of two new teams ahead of the 2010 season, suggesting that a Serbian outfit will instead be on the starting grid in Bahrain.
Former BMW Sauber driver Nick Heidfeld has joined Mercedes as back-up for Michael Schumacher and Nico Rosberg to complete the new team's line-up for the 2010 Formula One season.
Spain's Fernando Alonso produced the fastest time in official testing in Valencia on Wednesday in his first outing since joining Ferrari this season.