The boxcars are on a track (two outside color bars) and are actually sunk into the field. The center bar is just a large strip of colored tape or material to further identify the side the boxcars belong to. Yes, I gave the boxcars bumpers.
The boxcars would have a slick surface under them, like the regolith from Lunacy, so the boxcars will slide easily back and fourth when pushed by a robot.
Red alliance will take the closer right station in this image, as the smaller car is closest to them. Perhaps where the cars are positioned at the end of the game will determine bonus points.
I also just thought of a flat box car, where a single robot would climb on top of to score end-game points.
Once more hints come up I'll add/subtract to this, my theory.
Link to the image of the track:
http://i48.photobucket.com/albums/f2...cher/Track.png