The BMW 7 Series sets a benchmark for ambient lighting in luxury sedans with its comprehensive and customizable system. It employs fiber-optic technology and RGB LEDs to project light across the cabin, including the roof liner, door handles, and instrument panel. Owners can choose from pre-set themes or create personalized color schemes using the touchscreen interface. The lighting syncs with other comfort features, such as the climate control and audio system, to create a holistic environment. This system is designed to reduce fatigue on long drives by providing balanced illumination that adapts to external conditions. BMW's focus on precision ensures that the lights are evenly distributed, avoiding hotspots and shadows, thus maintaining a serene atmosphere.