My wife was driving on the highway and the sun roof imploded, the glass shattered and fell into the car there was no one in front of her and she was not going under a over pass. dealer claims it was a rock, no way could a rock hit at that angle with that much force to shatter the glass! we have heard of this happening before but not with a lexus. we were very lucky she was not in crash as it was such a shock to her she hit the breaks not knowing what happen. we were not happy with the explanation of the dealer or lexus that is was a rock! *js