The camera is pointing at the car. The train is moving past the car. The images of the whole train are made by stitching together lots of photos, all containing the bit of the train in front of the car as it moves past it.

From what I can see, they're not actually duplicated, I would suggest taking a closer look at the windows. But I do agree that it's quite hard to see the difference.

The trains look very clean from the outside. I do wonder how loud is it, to live so near the tracks.

They are also very clean from the inside :).

I also live right next to a train line in CH (that has exactly the same kind of rolling stock passing by as the ones captured by jo-m). These are modern commuter trains (no cargo and long distance trains), and are a lot less loud than you'd expect. A somewhat busy street nearby would be an order of magnitude more annoying.