High-tech Ziwei Cloud on the Li Yunfeng

Cars can travel along the Panshan Highway to the towering Yunfeng. The Panshan Highway is built in zigzag, with the main purpose of increasing the length of the slope. When the truck goes downhill, the gravitational potential energy decreases. In order to reduce the speed, the master driver steps on the brake pedal from time to time, and part of the mechanical energy is converted into internal energy. On the way, the car should always stop and let the staff spray water on the wheel brake pads with the faucet, just to cool the brake pads.

So the answer is: increase the length of the inclined plane, reduce the internal energy and cool the brake pad.