I must admit to seeing that relationship too, with even current-day Audis bearing an unmistakable 'heritage' & styling legacy which traces back right to the door of the awesome, clean-sheet & precient NSU Ro-80
Its especially noticable when viewing in person, but fwiw...
http://images.google.com/imgres?img...&ndsp=20&um=1&hl=en&client=safari&rls=en&sa=N