Quote from:
http://formula1.about.com/od/car1/a/...owing-Down.htm
''We press with up to nearly 200 kilos on the brake pedal,'' said Sébastien Buemi, a driver at the Toro Rosso team. ''We do not have assistance like power steering or assisted braking. But this is just as well because it allows us to feel it better. We control the braking much better. When we block the wheels, we are the ones who have to let go of the brake so that it is no longer blocked. A road car does that all by itself.''
Never realised there was so much pedal effort required

to drive these cars and all the forces involved is quite amazing