... One turns to the other and says, "You drive, I'll fire the gun."
What? A tenuous link to my non-fishy tank, I've failed to find someone who presently has both the time and the space to take the car and design and fabricate a tank so I'm having to do the first part of that myself. Here's a selection of images showing progress - ignore any internal supports, they exist only to keep the cardboard in shape.
As they say, watch this space.