That's great to hear! If your son isn't worrying about it, then he's set. I see. There have been cases, albeit rare, of PWS getting pulled over &/or being mistaken to being on drugs. I have a stuttering identification card that I keep in my wallet in case I ever need to pull it out. Also, I have an acquaintance who recorded several recordings with important information. For example, he has one that states his name, home address, and medical disabilities and another which states "help". His stutter is on the severe end, so in the event he cannot speak, he can play the recording. For other possibly dangerous situations l honestly don't know. One can only hope nothing ever happens. You obviously know your son the best. Everything you've been doing so far has been made with his future in mind. You're doing more than what some parents never do. Only time will tell what'll happen next. I wish you & your son all the best!