I appreciate the difference between going centre of the fairway or by some other route but if you peer closely at the picture I have gone pretty much straight up the fairway... and a difference of 40 metres is more than that would account for (I think).
I think I had the same problem as borntobesting at SA Hole 10, drove past the green when I shouldn't have been able to reach it according to the distance given.
I wouldn't mind seeing diagrams of how the hole distance are measured - more out of curiosity than anything else