Washed car today and noticed acrack in the windshield! What is strange is that it runs from the lower border of the windshield,under the middle of the driver's wiper blade to 1" above and then 1" left. Don't remember anything hitting the windshield this low-it is a very stange place for a crack and strange shape-no bulls-eye or spider web. Could it be a defective windshield???? If I can't get BMW to accept it as defective glass(only 3 mo. old) how does insurance handle it???