One of our readers sent in this “top secret” clip of Audi’s upcoming R8 being tested at the Nurburgring track in Germany. This supercar sports a 450hp V10 engine from the Lamborghini Gallardo. Video after the jump.

One of our readers sent in this “top secret” clip of Audi’s upcoming R8 being tested at the Nurburgring track in Germany. This supercar sports a 450hp V10 engine from the Lamborghini Gallardo. Video after the jump.