Does anyone have any long term data on these? I read somewhere that some had experiences that it yellows over time. I would be concerned with the hot sun exposure daily in some cities that it react or discolor the paint not letting it breathe? Also how easy to fix if the corners or edges start detaching? I look at my 18 year old red Volvo and do see some white specks in the front of the hood but you have to be standing right over to see it. My wifes 9 year old silver Toyota is even less obvious unless looking closely, I think the pearlescent paint is more durable than flat paint. I don't doubt that it will prevent the small stone chips, but overall for me, the risk of failure over time is more of a concern then what I am actually seeing from the cars we own.