I had a brief by the local FSDO here in houston last year and they had video and pictures of a collision between a 172 and 152 on the west side of Houston. One of the 172 mains went through the 152 and killed the pilot with the crash landing on a freeway, the 172 had part of the wing missing from the wing strut out. It was peeled back and dangling. The 172 had a student and instructor I think in it. The student had been flying and had left the flaps down while flying around, the instructor took over and noticed the flaps down and went to put them up, as he did the plane rolled and started to go inverted and down. 2 hunters in a field had video'd all this. As soon as it rolls he drops the flaps back down and the plane rights itself. He continued on and made a successful landing. Was amazing to see the damage to the plane.