Several incidents in which adaptive cruise control resets itself to 90mph when moving into a higher speed limit area- for example, cruising along at 70mph, pass a speed limit sign allowing 75mph, and suddenly the cruise control resets at 90mph. If you are not very consciously thinking about this you quickly find yourself going 90mph. It never resets at 80 or 85- always 90mph. Going 15 or 20 mph faster than thought or planned certainly grabs your attention and is a safety risk.