Elon Musk said he is living in an aluminum-shelled Airstream trailer next to xAI's expanding supercomputer operation in Memphis, Tennessee, where the company is scaling Colossus to support Grok, its large language model. Musk described the trailer as his new "palace" during an All-In podcast recording alongside SpaceX President and Chief Operating Officer Gwynne Shotwell. The arrangement reflects Musk's longstanding practice of staying close to major projects, including during Tesla's 2017-18 production push and his 2022 takeover of Twitter. Musk's net worth is $917 billion, according to the Bloomberg Billionaire Index, and he briefly became the first person to exceed $1 trillion for 12 days in June. xAI began building Colossus in 2024, reportedly completed the initial facility in 122 days and has announced a fourth Memphis-area data center called Minihard. The company has also sold excess computing capacity to Google and Anthropic for billions of dollars. During the same podcast appearance, Musk said the depth of cooperation between Tesla and SpaceX made their future difficult to predict, adding to merger speculation. Neither company has formally commented on a possible combination. SpaceX and Tesla are already working on Terafab, a semiconductor project intended to begin production in Texas, while SpaceX acquired the AI coding startup Cursor and absorbed xAI in February. The combined entity completed its initial public offering in June, described in the source as the largest in history.