I saw just the other day about the first house being fully 3D printed. That gives you the ability to create houses on a massive scale! I would suspect a huge reduction in costs as well. Honestly 3D printers are a very powerful thing and I'm curious to see what other things we will start mass production with on them. The downside it's going to push a lot of people out of jobs of course. But you've been writing about that for a while now.