So I think that 10% is a lot of skill and dedication, but also a sort of numbing to that fear.
I've occasionally gone into a corner way faster than I should with my abilities, frightened myself, but the car has stuck to the track. It made the corner. I couldn't do this intentionally, even knowing that I can throw it into the corner x mph faster than I'm comfortable with and I will come out the other end pointing in the right direction, I still can't do it.
Then you realise that if I gave my car to a racing driver, he would drive it like that in every corner of every lap. Because he has to, because if he doesn't he's giving away time.
It blows my mind.
My limit for how fast I can drive a car is so much lower than even an average road cars physical limits.