This is great. I'd have thought it would score way higher. It has a lot more interest than many of the higher rated ones, and is far from the typical abandoned house or railroad car most people would guess would be the most popular subjects on this theme.
Have you tried it with it rotated so the horizon's horizontal and the cart's at a slight angle, instead of the cart being cropped square?
Anyway, great location, concept, and execution. A lot of the most imaginative and stylistic pictures can't do so well because the contest averages all scores. For "polarizing" pictures that get a lot of 9's and 10's but also a lot of 3's and 4's because they're interesting but rubbed some people the wrong way, they might try some sort of "honorable mention" or something that rewards images with fairly high scores and relatively high standard deviations in the scoring.