I did lose a panel in Wyoming. It was a day we should not have been driving but had no choice. I am not sure if something came loose to give it more lift but the combination of the 40 mph hour (higher gust?) and the driving speed ripped one of the 4 right off. Tore the EPDM roof. Not a good day. I never knew until we got into the campground for the night. My solar wires were hanging in front of our door.