Yes, I have thought of that. I wonder what would a cop think if I got pulled while doing my acappella. A new type of pipe? lol. I would probably explain it and hope he believes me. I do not do my aerisol nebs while driving but I do an aero chamber with my albuterol puffer. Either way, it is a distraction. I am worried about the driving whil distraction as a ticket in itself. So whenever I see a vehicle coming, specially one I think might be a cop or state trooper, I put it down in my lap and once I pass by I continue to do my treatment. I also keep checking out my rear view mirror in case one slips up on me.