Space hopper?

I was reviewing the photos I shot at the Havelock yard last Saturday. In one I saw, peeking out from behind a foreground hopper, what looks like a hopper with some sort of space themed graffiti or mural painted on. I've marked the section with the red arrow.

I didn't notice that car when I was there, but it was so far back in the yard I probably wouldn't have gotten a better view anyway. I'll be on the lookout for it just in case it shows up again, and hopefully it'll be on a track close to the parking lot.