Over-exposure here ruined what could have otherwise been a great photo, nice composition, but I'm sorry, 4/10. Tricky conditions to shoot in I'm guessing.
The clouds are slightly overexposed but the rest of the shot is really well done. I like the composition with the vans where they are. They add interest to a nice landscape shot.
I'm not so sure what to think of the vans on the snow... obviously they are the main subject of this photo. I'll ignore your title, and read this image along the ecology lines, something like polluting the nature or similar. Do not get offended with this comment; this is exactly what this image provoked in me. And for that reason alone I took the time to comment on it and I will score it high because it caused some reaction within the viewer. That's what photography should be about and I commend your effort even if not intended as such:-)
8.
I like the sharpness - very crisp. I just wish the highlights weren't so blown out. Especially along the lower edge, the sand has almost no texture left to it.