The car wind model is similar to the aircraft wind model. The wind-driven model is used to test the wind resistance of the car first, and it is difficult to sell the car with too much wind resistance, because it consumes electricity and fuel and also has an impact on the power. The wind model will be modified after the test, until the wind resistance of the car model reaches the national standard. Now there are only two wind-driven test sites in our country: one test base in Chongqing and one test base in Hubei. The production link of the wind-driven model of the car is essential.