It’s kind of hard to tell for this image, I think the background is probably real, or at least, created separately. but there are a couple sus features in the foreground. Superman’s right hand, the green jacket, and the apparent facial features of children I mentioned before.

It does have a signature in the bottom right, so I guess you could track down the artist to find out for sure, but with my first comment, I was just pointing out the comedy of kids with facial hair.

I love the kids with mustaches and facial piercings.

I feel like that might have been the point. Rather than “using a car to go from A to B” they walked.