While driving down the freeway, my sunroof shatter...

While driving down the freeway, my sunroof shattered scaring me. Shortly afterward I called the service department at AutoNation Subaru West to schedule an appointment to have it fixed. They said it would be about 4 days until the parts were all in, which worked for me. On the phone I said I thought it should've been covered under warranty as there was no one around me on the freeway and the glass bowed up after cracking, indicating to me there was some thermal expansion that shattered the glass. The representative said they would have to look and see when I brought the car in but that glass doesn't usually shatter on its own. When I brought the vehicle in, someone was there to help me immediately which I appreciated and after going around the car said that it would be $710 and the sunroof wasn't covered under the warranty. After trying to understand the warranty coverage with the representative, a manager came over and said he had received approval to do a one-time good-faith repair and they would cover it. I was appreciative and thankful of this as there was little if any indication that the glass was shattered by debris. They finished the repair early and picking up my car was a breeze. I do wish that when I came in the manager had taken the case earlier instead of me discussing with the other representative about the warranty. In the future I will probably return for repairs/maintenance that I can't do myself.