Ok, after a few days of sketching concepts, I finially decided on something. I'm going to do a double barrel tank . Now this sketch is just a concept. The actual model will look a bit difffernt. The sketch is just a very loosly based concept.

Other ideas were.

-a dual shelled egg- ( my first initial idea )

-a dual barrel shotgun

-a dual barrel blaster pistol ( aka. Blade Runner style )

-a dual layered light bulb- ( heh, don't ask me why )

I was going to post sketches of these until I thought of the tank.