This transcript was prepared by a transcription service. This version may not be in its final form and may be updated. Tim Higgins: A lot is written about Elon Musk. What did he say when you told him ...

SpaceX uses 3D printers and a process of relentless refinement to streamline its Raptor engines. In the Raptor 3, plumbing and wiring that had been on the outside were fused into the motor’s metal ...