How does Audi's advanced all-wheel steering system work in the A8?

I've heard that the Audi A8 has a unique all-wheel steering system. Can you explain how it works and how it enhances the driving experience?

The Audi A8's all-wheel steering system is able to turn both front and rear wheels, allowing for enhanced maneuverability and stability. This is particularly helpful in tight corners and parking situations.

I've found that the all-wheel steering system in the Audi A8 makes for a smoother and more controlled driving experience. It also improves the car's agility at higher speeds.