Final answer:
Car body lights do not need to be extinguished on highways during daylight hours under normal conditions since there's usually enough ambient light. However, always follow the local regulations that may require headlights to be used for safety.
Step-by-step explanation:
The location where car body lights need NOT be extinguished during daylight hours is highways. On highways during the day, there is usually sufficient ambient light and visibility, making it is less necessary for vehicles to have their headlights on. However, in some areas, there are laws that require lights to be on for safety reasons despite the time of day, such as in conditions of poor visibility or when passing through tunnels. Therefore, it's important to know and follow the specific driving regulations that apply to the area where you are driving. While you might not need to use your headlights on a clear day on the highway, in residential areas, parking lots, or construction sites, it could be beneficial or even mandatory to have them on for safety and visibility.