1. SpaceX IPO could be one of the largest in history. 2. Fundraising target is $30 billion, to enhance AI and Starship. 3. Ticker symbol 'X' may indicate merging Musk's tech companies. 4. Tesla shareholders support investment in Musk's AI company xAI. 5. Elon Musk's companies might cross-invest, boosting inter-company dynamics.