Local reinforcement of chassis structure with fillers

Fillers are placed in the cavities of the honeycombs, where screws and other fasteners connect the chassis to the suspension, and the driver's seat belts, etc. are also secured in this way. These fillers are typically aluminum or Teflon, a very dense resin-infused fiber material. Overall, the "sandwich" of this carbon fiber/aluminum honeycomb panel is very strong