A race car designer is a professional who creates and develops high-performance vehicles specifically for competitive racing. They focus on various aspects, including aerodynamics, engine performance, and safety features. Their work involves using advanced technology and materials to ensure the car is fast, efficient, and safe for drivers. These designers often collaborate with engineers and teams to refine their designs based on testing and feedback. They may also study the designs of successful race cars, such as those used in Formula 1 or NASCAR, to incorporate effective elements into their own creations.