Roof racks first appeared on foreign station wagons, and more often appeared in the form of a combination of "luggage basket + fixed rope", supplemented by practical decoration. For long-distance vehicles (not just SUVs), you can install roof racks according to your own needs, such as placing bicycles or luggage, etc. Now SUVs are more for walking in the city, and vehicles do not need to carry a lot of luggage, so the car roof rack now has more functions.