What do you mean by "why?" ? Or you mean, why there is this plugin when you already have construction/industrial decoration, oh, for that, well.... You can use both, but you can get that truck with a brick for this, and also, a container.
A pack? Its just one tile. One tile. One ...-SWEAR WORD- tile.
In the former solar system, there once was a star, 8 planets and their moons, some dwarf planets and their moons and asteroids. It was thriving in life.
Now there is nothing. Except me, a black hole, wandering through the emptiness of this Solar System.