New submitter kynthelig writes: There are a hundred reasons why 3D printed cars might not work. But that's true of almost any great idea in tech. A few automotive entrepreneurs have developed a vision — along with actual physical cars — that rethink the assumptions about how cars get built. The result has a smaller environmental footprint than either conventional or electric cars, allows for faster innovation, and retools car manufacturing into a local, community-oriented business. The car revolution isn't just in automating them: it's also in how we build them.