【案情介绍】某部军官李某家属孙某购有“帕萨特”小轿车一辆。2008年5月,孙某的朋友赵某在酒后将该车借走,其在驾驶该车时,将某路无轨电车拉线杆撞倒,事故导致该路电车被迫全线停运3个小时。事故发生后,经交警大队勘察鉴定,认定赵某持未经审验的驾驶证并且在酒后驾车,违反了有关交通法规,对事故负全部责任。事故发生后,该路电车所属公交公司将车主孙某、驾车肇事者赵某一起告上法庭,要求二被告共同赔偿损失 [Case description] an army officer Lee Moumou purchase “Passat ” a car. In May 2008, Sohn’s friend Zhao borrowed the car after drunk, and while driving the car, knocked down a trolley wire rod of the tram and caused the tram to be suspended for three hours across the board due to the accident . After the accident, the traffic police brigade investigation and identification, found that Zhao unsubscribed driver’s license and driving under the drunk, in violation of the traffic laws and regulations, bear the full responsibility for the accident. After the accident, the bus company owned by the tram brought the owner Sunmou and Zhao Zhao, the driver of the accident, to sue in court to require the two defendants to jointly compensate for the losses