The contact owns a 2013 Chevrolet Sonic. The contact stated while driving approximately 15 MPH, the rear windshield suddenly imploded, causing glass shards to be propelled inside the cabin of the vehicle. The contact stated that it sounded as if a shotgun had been fired. As a result of the implosion, the contact sustained injuries to the left eye. The contact sought medical attention. The contact stated that there was an abnormal electrical humming sound coming from the rear windshield prior to the failure. The contact stated that the defroster was not activated at the time of the failure. The contact stated that there was prior electrical shortage failures with the vehicle. Additionally, there was melted solder present at the rear window defroster electrical connection. An unknown local dealer and the manufacturer were notified of the failure. The contact stated that he had a Police Report for the failure. The contact stated that a field investigator was sent to the residence to inspect the vehicle; however, the cause of the failure was undetermined. The vehicle was not diagnosed or repaired. The failure mileage was 125,000.