There is some issue with the feel of the speed in GT, it is missing something.And its not blur or shake.
First of, if your eyes start to blur while driving, you have a medical problem(i think).
Second, try shaking your head up and down while reading the text.
There is no shaking because the eyes are the camera, and your head is the tri pod.
Your head shakes, but your eyes don't.Of course your sight is going to move a bit, but that's it.