Nice link. In Tennessee, the reason I never saw any bureaucratic oppression is that I answered the medical problem question "No". I did so because I do not consider diabetes to make me dangerous on the road.
I drive too fast which is much more dangerous than diabetes. I am one of those who is mostly aware when his glucose goes low. I checked one time while driving and my BG was 54, my wife made me pull into a sushi place to eat.
The Tennessee Diabetes ID card is six bucks. I ain't paying for a card that says I'm diabetic. That seems like it would be a self inflicted wound.