I was driving on I-95 in North Carolina: 74 mph; 94 degrees outside; thermostat/airc onditioner set at 70 degrees. All windows closed tightly. 4 lane, country-type highway; several miles between overpasses/exits; no car in proximity - either direction - within 100 yards. Suddenly at no cause the driver's side, front vent window exploded outward, and the entire window shattered. No damage whatsoever to either the exterior or interior of car. The positioning of the window itself would make it virtually impossible for anything to hit it; even if it were something small like a stone or pebble kicking up, there is no reason at all the window would have/should have shattered. I took the car to a Fiat dealership in jacksonville, fl.(my destination, after encasing the damaged window in cardboard and duct tape). The dealership has been very helpful, and filed a warrantee claim with Chrysler/Fiat. Fiat has denied that warrantee claim, indicating 'glass is not covered under warrantee and 'there is no such thing as defective glass'. the blogs are full of claims by Fiat owners of this very specific incident occurring. It has to do with pressure and atmospheric conditions, not defective glass, per SE. I ask the national transportation safety board to investigate this - and all other claims. This has (or will) cost me the following: $300 for new window/installation $75 in hotel room (the night the window blew out) $150 in car rental I am still awaiting the glass to arrive/be installed, so I have no idea what other costs I may occur as a direct result of this incident. I have take photos; will take more as the glass is installed.

- Chestertown, MD, USA