When Elon Musk isn’t busy running the world’s best-known electric car company, he can usually be found heading his private space transportation company, SpaceX. One wouldn’t think that a private spaceflight company and an electric automaker would have all that much in common, but the same welding techniques used to build SpaceX rocket ships have also been put to use building the … [Read more...] about SpaceX Shares Unique Friction Welding Technique With Tesla