In spite of being very careful when I was stuck behind this dump truck, a rock flew up just when I was going to pass. It hit the upper corner of my windshield but luckily ended up with a small chip only. I am sure that should it hit anywhere else, the windshield would crack and I would've gone in for a third replacement. My dash cam caught the whole thing. I uploaded only a snapshot since the video would not show much because it happened so fast.