I. Introduction
In the world that technologies come to fulfill our life, vehicles are one of the great innovations that humans have been inventing. We use them to help us transport humans, goods, and resources from one place to another place in a very short time. It is incredible that vehicles have become one of the important factors in our lives. According to that, vehicle manufacturing has been growing up rapidly. In each vehicle company, there is a competition to try to fulfill the needs of its customers and to win and get the biggest market share. The vehicle technicians use their techniques and skills to meet the needs of their customers but it is very hard to satisfy them since the needs of human have no limit.