The challenge in making a real hologram is to get the photons to stop in the air, some cars have a hologram in the window, but it is a solid thing, what you do instead is to use a projector, and then you use harmless dust, or smoke, to stop the light, in the future you can make a machine, which constantly emits harmless dust, and then send the image directly on, then you get a movable machine as well, this is the world's first real hologram well, nothing like it has been created