It was originally a part of a bus suggestion, shuttling between the cities. I imagined that the suggestion would be more attractive if it had some graphical content - in this case, a image of a bus. But now that i see that making suggestions on this forums is a pretty futile job, i decided to put it on ice for some time, since it was my primary motivation.
First, i was thinking of putting a open door with some darkened space reaching in the confines of the bus, to place a conductor inside the graphics, then as a challenge, i made the 3 rows of seats inside, among with a handle and steps. (9 passengers, perhaps one additional in the observation dome, which i wanted to place later)
The bus looks moreover like a armored wagon, because i wasn't sure about putting big, open, Wasteland-rare and tactically senseless glass windows, because of Harsh Wasteland with guns. So i thought a hard-to-hit embrasure would be a better, even if a less-lit choice of window.
So, for now, it's still possible to get a makeshift texture on it, (i suck at texturing), render, dither the image and iron out the minor flaws with Photoshop - then, we would have a ready-to-use bus graphic... Still, i'm heavily dissatisfied with the mesh, because the topography (layout of the edges, faces, which makes the surface of the model) is a mess (pieces put together, deleted and composed in frantical way of a solution-searching noob) and it turns really ugly if i try to subsurf it (smooth the edges automatically)