The term "unibody" refers to a type of car construction in which the body and frame are combined into one single, strong piece. This means that instead of having a separate chassis or frame onto which the body is attached, all the structural components such as the floor pan, roof, doors, hood, and trunk lid are made from a single piece of metal. The unibody design provides several advantages over traditional body-on-frame construction including improved safety, better fuel efficiency, and reduced weight. Additionally, because everything is integrated into one cohesive unit, repairs can be more straightforward as there are fewer parts to work with.