It's not even a week since we last saw Formula One cars running out on track, but the German Grand Prix weekend is upon us and it starts with a bit of practice. Three sessions should guide us through Friday and Saturday morning, although the weather looks set to be damp to start with, so running may take a while to get going. There's also the added problem of the tyres, but far too much has been said about that already. Drivers have a combined total of four hours to get their cars up to speed before qualifying begins.