Well, here's a pic of Rouse in his sprint, but I don't think it's the one I was thinking of, which he posed for for ages as I checked my light meter, adjusted exposure etc. etc.
Looking for this pic I came across some others from the mid 1970s, when I used to go to a wide variety of motorsport events, including@
1975 RAC Rally
(apologies for poor quality)
1975 British Grand Prix - my hero
and the International Trophy, Jarier getting it wrong
Apologies again for the poor quality, but cheap camera and then scanned.....