Sithhy has been working on the front of my D50/D55 truck for the last couple of days, still WIP (It's black to cover placeholder textures, he still needs to make UV maps and all the textures)
Now make a Pigeon where the body and the bed are one piece and add seats in the back, and you get something similar to the Reliant Robin a bit
people have been waiting for this since the dawn of time. it always seemed like an easy thing to do in my opinion, or why was it not included ingame