On its LAST day of Testing on the Ring, AUdis Supercar the RS8 went down in Flames. The Wheels and the Roll Cage are all there survived the blaze, the Drive got out unhamred. Link
I don't think it wrecked from the reports I read, the engine just caught fire. I believe its the V-10 version (prototype) though which isn't the normal V-8 version they have out now. They are gonna add wider air ducts behind the door to cool the engine. Yeah it wasn't a wreck, car just caught fire which has happened before with Italian supercars. Yes, this RS8 shares the same engine as the Lamborghini Gallardo.