While driving on the expressway, I heard a loud explosion and thought someone had hit me but there were no other cars around, then it hit me "it must be the sun roof" - and sure enough when I got home pieces of glass were coming into the front seats. Now I don't know how much it's going to cost, I'm elderly and live on SS. Wish I knew if Hyundai will replace it - it's not covered by my insurance, I don't think.