I'm a big fan of the Nissan GT-R 4WD from the day that they start racing in the Australian touringcar championship.
The all new GT-R show a 4WD system that should be in the Audi B8 floorplan.
This transaxle 4WD system show the ultimate weight balance, motor in the front gearbox in the back.
This car will wipe the floor with future RS4/RS5 cars and it even wipe the floor with the R8 4.2 FSI and new Porsche 997 Turbo on the Nordschleife.
Audi should have use the R8 4WD to do the same with the B8.
Put the R8 drivetrain in the B8 and place the engine to the front and put a axle between them, and you have the same princeple.
Hans.