Penned by Audi's new design chief Marc Lichte, the Prologue is earmarked to introduce a shift (if not quite a complete change) in design direction for the German automaker. The trapezoidal grille ...

If this proves to be true, the suits at Audi should have an easier time rubber-stamping the A9 into production. From there, we would guess that it wouldn't be too long before a production version ...