Found this in a random search. The full contact discs are interesting, as is renaults plans for brake by wire! eeek!
http://images.google.co.uk/imgres?i...um=1&hl=en&rls=GGIC,GGIC:2006-44,GGIC:en&sa=N
http://images.google.co.uk/imgres?i...um=1&hl=en&rls=GGIC,GGIC:2006-44,GGIC:en&sa=N