Elon Musk is fully behind a combination of SpaceX and Tesla, his two most valuable companies. He is pushing to announce a deal by the first half of 2027 so it closes during the Trump administration. The timing will depend on when Tesla's board gets comfortable with the details - SpaceX shareholder approval is less of an obstacle, as Musk controls more than 80% of the voting power. Combining the companies before the end of this administration would consolidate Musk's corporate power before a potentially less accommodating political and financial environment takes hold.