We who are diabetic need to be cautious when ti comes to driving,,, There is a related condition Hypoglycemia, (low blood sugar) which can cause us to appear to be and act drunk.. Not even police in many cases can tell the difference (For some reason the Michigan State Police Troopers seem to be good at it though, Please do not ask me why as truthfully I don't know, only reason I can think of is better training).
Now many, even those on insulin (Like me) can sense when they are going Hypo and treat it (Easy to do, the cure is FOOD after all) . But alas not all, EPICALLY those using the 'Human" insulins (in quotes cause they are made in a lab, not a human body) can do that, Many suffer from "Hypo Unawareness" where you can drop not only below 70, but below 60 or 50 or .. Well I heard of some down in the "We are amazed he is still alive" range. And when that happens. You can get in trouble.
For this reason it is best to test before driving, and/or have a companion/co-pilot who knows about your condition and can watch for the signs of Hypo (Same as drunk only no alcohol on breath... KETONES however, are often mistaken for alcohol)
For more info: http://community.compuserve.com/diabetes
By the way, if you are interested in following FDA recalls, Food, Medicine and devices, same URL the thread is titled 2012 FDA recalls (At least till Jan one when I'll start a new one) and is in the News and Views sub folder.
I do not own or get paid by the forum there, I just maintain that one thread.