What is the importance of the BMW 7 Series's active kidney grille?

I am interested in the technical details of the BMW 7 Series's active kidney grille. How does it function and what are the benefits?

Julia, the active kidney grille on the BMW 7 Series is a revolutionary feature that not only improves the car's aerodynamics, but also helps with fuel efficiency. By automatically opening and closing the grille based on the car's speed and cooling needs, it reduces drag and improves engine efficiency.

Hi Julia, the active kidney grille is also designed to enhance the car's visual appearance by adjusting the grille bars to create a more dynamic and striking front end. It's a unique and futuristic feature that sets the BMW 7 Series apart from its competitors.