Quote - (I know of a comic years back that had thrown Batman into the background of one scene as a bit of a tribute.  The Comic publisher was sued, the comic was cancelled and a lot of people got into a lot of trouble.)

(Tributes and spoofs are a very grey area and you tred on shaky ground legally speaking.)

 

Do you have a reference for this? I've seen Batman show up in a lot of background scenes, for instance in Alan Moore's "Top 10". (Of course, when he makes these cameos the artists are careful to only show his head, and not show his emblem. Often he isn't wearing a cape. Of course, then he can actually be mistaken for the old DC hero "The Cat".)

As to the APC, it sure looks a heck of a lot like the M577 from Aliens; not to be confused with the real M577 series. Its not as if the M577 was based closely on a real-world vehicle. (You can get away with SF guns similar to Han Solo's blaster since that was basically a Mauser Pistol with a scope and some fiddly bits.)