Fantastic shot!
The first thing that came to my mind as I saw it for the very first time was "Long straight road without any obstacles on sight. Majestic, imposing trees that have been there, on both sides of that road, for years and years, solid, strong. Newlywed couple, hoping their life together will be a long and obstacle-free one."
I like almost everything about this pic.
The symmetry and the converging lines are simply great. Not only you have the road but the trees, the fence... Pity of that bush and the missing/blown horizon to the right of the image.
I also love that vertical light that leads towards the B&G.
B/W really works for me and that, together with the scale and majesty of these trees, seems to give this photograph a timeless quality.
And I also agree with those saying this great photograph deserves to be shown in a massive print. That way it would be even more impressive.
Should the B&G be looking forward or to each other? If you want to give the image a more timeless quality, then they should be looking at each other (or even looking towards "the road ahead"). If you want to make the image more personal to them, then looking towards the photographer works just fine.
Again, all this is simply my opinion.