Inside appears to be a special concrete floor and dome.
The sides, back, bottom and top has a sheet metal covering.
The front had brick opening around the opening and the rest of the front had a gray particle board that looks like the stuff used to sheath bathroom walls before the tile is put on.
So my son tiled the front. Link to see pictures of the truck.
The first one is the truck after we got it back on the road before the pizza truck work was done. Jeffrey
http://www.pizzarita.org/gallery/
