Here's my chance to disagree with almost all the other comments.
I like both the composition and the processing as is.
The kids are, of course, the main draw. But you can't see their faces, so they remain anonymous. Second focal area is the wandering sets of headless legs, whose anonymity seems to comment on the kids'. And the car wheels are just a variant of the wandering legs, adding amusement.
If it were my shot, the only thing I'd be tempted to do is to remove the half-head, or blank it out to enhance the sense of anonymity. I wouldn't crop, though, because that would kill the car wheels, which I like.
Just my 0.02 cents.