I hope this will be considered original enough to be entered into the contest. It's my first 'official' MOC an I don't want to hide that it has been inspired by some of the great MOC's that can be found on Brickshelf (here and here or here and there was another MOC I stole the idea of the use of the vertical grilled bricks from, but I can't find it right now). It's different from these MOC's in that it is 6 studs wide. I think that this width fits well with the rest of my rolling stock (untill now only official LEGO train sets). Also, any design I tried in seven studs wide used many more parts and was a lot more expensive.
My Lego collection is rather modest and contains hardly any green, so I tested the construction with whatever bricks I had, but designed it in LDD and ordered the parts from the LEGO factory. You might find it in the gallery in a couple of days. My username there is also 'wtorbeyns'. I received the parts today and put it together. It was mostly as I expected. I removed one layer of plates from the original design (something I considered before ordering the parts, but I thought it better to order the parts anyway).
The two sets of wheels can pivot slightly on a pin and they are connected to eachother by a rubber band. This way the coach moves easily trough all the normal curves and switches. I had to replace the couplings with the classic variant, as the newer couplings have a pin sticking out at the bottom that kept hitting a crossing on my track.