The limiting factor in F1 these days is the driver, there was a great article in Popular Science about it. Without worrying about keeping a driver alive (and co

The limiting factor in F1 these days is the driver, there was a great article in Popular Science about it. Without worrying about keeping a driver alive (and conscious), the cars would be substantially faster. They also talked about how physically demanding driving an F1 car is, and how a driver is basically an athlete in prime condition. In keeping their heads upright through turns they develop some ridiculous muscle in their necks. There's a funny video on youtube of an F1 driver crushing a walnut with his neck.