What the heck is going on here?

You might be asking, "What the heck is going on here?" I know my neighbors are. I watch them slow down as they drive by, peeking into see what I'm doing. A few of the braver souls have even stopped by to ask. I'm sure there has to be a good redneck joke in here somewhere. I'm not sure what it is but it has to involve living in a mobile home that doesn't move and building a structure out of hundreds of tires. What I'm trying to do is build a structurally and environmentally sound building for very little money. When it's done it will be a passive solar, earth sheltered structure. Upon completion you also won't see the tires anymore.