OK, Zuffen I will take your word for it...
I have never driven a Nascar but I have looked them over bumber to bumber many times... Their tires are fat and slick, the suspension is light and "very" stiff, and the wheel base is wide on the front and rear.. The car is also lighter in weight and rides lower then most street driven sportcars.. I would think with all that good handling wouldn't be question....
The truck feel that you speak of, I would venture to guess would be because there is no power steering.. It would definetely be a rough ride for sure and that I do not dought.....