We briefly review a method that improves rigidity, helps achieve the goal of a lighter car and also simplifies production. Which car have you sat in that uses this method?
The car body must meet two contradictory requirements: lightness and strength. Lightness abets performance and improves agility: less car to turn. It also usually helps keep the cost down. At the same time, a car must not fall apart while standing still or while in motion. And if the car should hit something it needs to protect the occupants. Usually you may have lightness or robustness but not both.