Broken Bricks recycling machine

The conceptual Broken Bricks recycling machine looks set to be a best seller in war-torn countries, especially when you consider all the old concrete lying around, waiting to be disposed off indignantly. Why not run them through the Broken Bricks recycling machine? It will turn old concrete into new Lego-like bricks that can be used in numerous applications, and perhaps we could get an actual Lego building? Of course, all this is just a pipe dream at the moment because there are still issues like having a solid foundation and all of that to think of.