Compared with the ordinary version, the green devil painting version of the personal project giant viper Lachesis uses customized car paint, speed yellow flower, lightweight carbon fiber kit and overpressure battery pack outside the rear compartment, which not only reduces the weight of the car, but also gives the giant viper additional overpressure acceleration capability. The external battery pack can increase or decrease the number as needed, and provide additional cruising range for the vehicle when necessary.