From the designer's point-of-view, this can be long-range hill-climbing stealth tank. Because after hitting any enemy at extremely long distance, it can walk back from the top of a hill to being behind a hill, being no longer in enemy's sight.
Looks like it was designed to peek over hills etc. Very nice.
Do you sometimes just take pictures of parts of mechanical things and then paint around them? It seems like that with the cannon barrel here.