四川王宇龙问：某甲购车，挂靠某厂名下办理了上户手续。后某甲准备将车出卖于某已。某乙经某甲同意，由某乙驾车一同外出出了事故。双方的买卖关系因没办过户手续被判决无效。现受害人起诉到法院，某甲、某己和某厂谁是被告？另外，该车投保了第三者责任险，出事时在保险期内 Sichuan Wang Yulong asked: a car, linked to a factory name for the next procedure. After a certain car ready to be sold out in a certain. A B by a nail agreed to go out by a car accident with an accident. The sale and purchase of both parties was adjudicated invalid because they did not make any transfer. The victim is now sued to the court, a, a and a factory who is the defendant? In addition, the car insured third party liability insurance, the accident during the insurance period