Sun Roof problems of the 2009 Ford Focus

I was driving down the road, at 55-60 mph and all of a sudden I heard a loud bang, well my sunroof just exploded from the inside out. Nothing hit it, the roads were bare, I wasn't under any trees, nothing. There's a big hole, and surrounding the hole the glass is shattered. I took pictures of it. The glass is pointed out, not in. If something had fell on it, there would have been a lot of glass inside the vehicle but there wasn't. Its a brand new car! 2009 Ford Focus. Haven't even had it a year. Company wont cover it under warranty because they believe something hit it. I said no. I did my research and found 3 other Ford vehicles that have had the same thing happen. This is a very dangerous situation and needs to be looked at. Its unsafe. I could have had little pieces of glass in my eye!!! or if I had a passenger they would have gotten all these little shards of glass on them. Completely ridiculous. Something needs to be done.