You know, I did see it. If I remember correctly, there were at least 2 other versions. I've got pics on my cell phone (I'll upload another day - don't have access right now).
A black one with a red Boat and
White one with a blue helicopter.
From the pic in cell phone and comparing to your's, it looks like they've got a mix of different color AVs and Hummers, put the same trailer on them, and then mix boats/ATVs/Helicopters (in different colors). But they are all the same exact box.