Some time in the late Seventies, Audi engineer Roland Gumpert drove an off-roader built for the German army. It was while driving the contraption that Gumpert - who now makes his own, spectacularly ugly cars - had a brainwave.
Why shouldn’t Audi road cars have the grip of a military 4x4? At the time it was a fairly radical idea. But his bosses liked it, and it wasn’t long before the quattro was born. All they needed was a way to show the public that it worked…
Pictures: Ripley & Ripley
This feature first appeared in Top Gear magazine