I tried, out of traffic, to simulate the quick moves necessary if a fast stop was the only thing to do. I have, yes, numb feet. I drove for 62 years. No, I was still a damn good driver.
I sncerely believe that anyone with numb feet, fer godsake, who is aware of proprioception and that it won't save you in a life/death quick stop moment is a menace to the world and to themselves.
I stopped a year ago. I am still grieving the loss of my
freedom as a driver. Gave my car to the Kidney Foundation.