Aerodynamic devices are tools designed to improve the airflow around vehicles, making them more efficient and stable. Common examples include spoilers and wings, which help reduce drag and increase downforce. By managing how air moves over and under a vehicle, these devices enhance performance, especially at high speeds. In addition to cars, aerodynamic devices are also used in aircraft and bicycles. For instance, aircraft wings are shaped to lift the plane into the sky, while bicycle fairings can reduce wind resistance. Overall, these devices play a crucial role in optimizing speed and fuel efficiency across various modes of transportation.