Well I can tell you...
Your foot will drag, then your pegs, if you have horizontal mounted highway pegs they will drag and catch. At that point you will flip your bike and you will be dragged in to a waiting ambulance.
If you don't have horizontal pegs the engine guards will drag and the rear guards will drag next. However if your over that far you no longer will have traction to the front wheel and your GL has just become a sled. Now your knees will drag followed by your elbows and hips. If you’re lucky the bike and you are now separated and road is slowing you down. Friction does that you know. Depending on your speed the body armor is now exposed and your riding gear is ready for rejection at the Good Will. Did I mention your bike is now over on its side and about two thousand dollars worth of plastic and metal is dragging on the road; making for on hell of a spark and grinding noise. You won't be able to appreciate this since your helmet is bouncing along the pavement and all you can hear is breaks screeching and the screams coming from the on coming car..........
Don't ask me how I know this.......