In case you miss it, a video of the thing in operation is linked: https://youtu.be/pcAEqbYwixU
Reminds me that there are limitations to volumetric displays—namely that, since you have no idea where the viewer is located, there is no backface culling you can perform. So it seems to work best for "cutaway" views.
I'd like to see one in person. Might be "magical" — the video only kind of hints at this.