Driving 62-67mph on the highway, sunroof shattered. loud sound of shatter. i was in the very left lane (passing lane). there was a vehicle that cut me off and passed the car in front of me on the left shoulder which may have kicked up debris when it got in front of the vehicle in front of me from shoulder, but video doesn't show it. it could have been a very small pebble or something. https://youtu.be/8mbekwtgyqw