I had a call like that recently where a diabetic became hypoglycemic and rammed into a guard rail at the bottom of a hill on the opposite side of the road...slurring like a drunk he managed to tell me he was a diabetic I luckily had a candy in my pocket (I was off duty but saw it happen) and shoved it in his cheek while I held c-spine and had a girlfriend call fire and a crew I'll never forget how much of a headache it was trying to keep him still...especally after having to break his back window in to help him =/