A few things -WHAT-. Firstly, have you ever been driving for a long time and got tired? There is no doubt u have. It takes a lot of effort to concentrate when you are tired. Imagine driving for abou 1-3 hour but in 40+ degree heat, no chance to relax. Its hard enough to concentrate for 1-3 hours just sitting still and reading let alone with all the variables involved in driving.

Secondly i bring the point up about "spot the sportsman". Formula , Rally, Circuit drivers are more than athletes that most american footballers. Some of them run on the field, kick the ball and run off, harld a sportsman. Drivers have to race for hours on end for most of the year. The F1 actually started as soon as the last race was finished. Teams were already loking at next years car, the drivers would have been getting ready for training, practice ect. (Personally i dont consider most of NFL a sport, the NFL [players are amazed at out league and union players as they were no padding (some helmets) and stay on the field for the whole game (80min)).

Tiger Woods can be compared to Micheal Schumacher as they both (when Schmacher was still in F1) practice for long periods of time. If Tiger Woods doesn't train or practice (even get coaching) his game goes bad, because if you dont practice your body loses the natural memory of the movement and thought process. Schumacher has needs to train and practice a lot otherwise he would lose his thought process and natural memory of movements. HE would still be able to steer but not get the car on the perfect racing line.