Why is the Audi R8's all-wheel drive system unique?

I've heard that the Audi R8 has a unique all-wheel drive system. Can you explain how it works and how it's different from other all-wheel drive cars?

The Audi R8's all-wheel drive system is unique because it is a rear-biased system that uses a mechanical differential rather than an electronic one. This allows for more precise power distribution and better handling.

Unlike other all-wheel drive cars, the Audi R8's system is able to send up to 100% of power to either the front or rear wheels depending on the conditions. This not only improves performance, but also makes it more versatile for different driving situations.