On the commute this morning the 5 took a healthy sized rock to the windshield @ 70MPH. It left damage, but only VERY minor a < long scratch that I can BARELY feel with my fingernail. I doubt much can be done to polish it out without risking further damage or glass distortion, and its not in my direct line of sight anyway (more up and to the left). My real question is, can any further damage occur by leaving it alone particularly with ice and cold weather? I understand a windshield chip can take in water, crack, and good-bye windshield, but like I said this is only a very shallow, cosmetic scratch.