Right, thats why the idea is not to transport a brick oven, but rather individual firebrick, and assemble the oven on-site. It is obviously just a novel concept at this point, and whether or not it would be feasible remains to be seen. I certainly havent gone any further than to think, hmmmm, thats a good idea, wonder if it would work???
And around here, these are not exactly "catered events" these are local festivals, where people setup booths and sell homemade wares. The food concessions are usually mini-donuts, corn-dogs, etc, typical fair food fare. Maybe this is unattainable, dont know.