Several of us in the new product development world have been skeptical about the use of additive manufacturing for actual manufacturing, but companies like Porsche and Bugatti are demonstrating that additive manufacturing has legitimate uses such as replacement parts (including brake pads) and obsolete parts. Check out this interesting article by Jonathan Gitlin, which shows that additive processes have a place in manufacturing. https://arstechnica.com/cars/2018/03/lightweight-calipers-and-rare-old-parts-3d-printing-at-bugatti-and-porsche/