I've been working on this the last week or so.
It's a grill that's going to be mounted crosswise on a trailer. The ends are notched to clear the fenders/tires. The work shelves swing out to let you get close to the tank openings.
It's got dampers on each end to control the temperature. It'll also have a damper on top of each stack.
There are doors low on the back side for access to the pans for holding the charcoal. There are two tracks for the pans to vary the cooking temperature.
This is the first time I've tried mounting the tank crosswise. I think it'll be worth the extra effort to get much better access to the working area and not have to work around the fenders. I wanted to try it with a smoker, but the firebox causes all sorts of problems.