hi, recently I have noticed a hair line crack (3 inches horizontal) on windshield, on the lower middle part and there is no sign of any stone chip (crack is felt from inside and it's smooth on outer coating of the glass ).Hyundai dealer says it's probably a big scratch and impact cracks usually appear vertically on sides only. Does any one have an idea about it, does the warranty cover this damage or should I get it repaired? It's a 2003model. MPS