CNN  —  Elon Musk may be taking a step back from his full-time gig at the Trump administration’s Department of Government Efficiency. But his companies are still benefiting from the unprecedented relationship between the world’s richest man and the sitting US president. That message was on full display in Saudi Arabia on Tuesday, where Musk was part of a program of meetings and conversations held with business leaders such as Nvidia CEO Jensen Huang and OpenAI CEO Sam Altman at the Saudi-US