When I get my hand on one of those 3D printer, I plan to make a self replicating lego train network en-masses, completed with construction legobots and the like

When I get my hand on one of those 3D printer, I plan to make a self replicating lego train network en-masses, completed with construction legobots and the like. The lego clone bricks will be the foundation for an entire robotic enterprise to build a train network around my neighborhood, and then the next and so on. That mean, lego assembly lines for building trains and various kind of construction bots, and various scouting legobots that fly, crawl, and move on the ground. Then it's time for the human to source electronics and plastic supplies, as well find a business model for the train network I am going to build. It's an interesting project that seem to be multifacet, at least to me. Alas, I am still on hacking my RC cars to become robot stage. Tommorow is desoldering day and finally controlling the motor of my RC car.