Vertical ice cube tray

I wonder what inspired the person to invent this very clever vertical ice cube tray. It's such an odd (but practical) idea. Here's how it works: You fill the lower container, which has the actual ice cube shapes in it, with some water. Then when you insert the inner container, it forces the water into the cubes. Then you put the whole thing in the freezer.

Here is what the designers of the IceORB say in its favor:

1) There's no way you can spill water when you put this in the freezer.
2) The ice is covered so it doesn't absorb odors in the freezer.
3) Once frozen, you can use the rig as a wine chiller or as a way to keep dips or ice cream cold.
4) Once you've made a batch of cubes (it makes 21), you can put them into the inner container to keep them frozen while you make the next batch of cubes.

Check the fusionsbrands website for a video that shows how it works.