Glass used on side windows is not the same safety glass used on windshields (on most cars). When it breaks, it shatters, sending sharp glass shards everywhere. So if it's rolled down, the door contains most if not all of this.
Glass used on side windows is not the same safety glass used on windshields (on most cars). When it breaks, it shatters, sending sharp glass shards everywhere. So if it's rolled down, the door contains most if not all of this.