Christian Horner fears that his Red Bull team may struggle in the next two races of the season after the summer break.
Team principal Horner is aware that the races at Spa and Monza have long straights and Red Bull have been at their best so far this year on tight tracks at which high levels of downforce are required.
Heidfeld ends Mercedes spell
Nick Heidfeld has parted company with Mercedes so that he can take up a position as Pirelli's official test driver. Full Story
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