:Elon Musk's SpaceX is preparing to launch a tender offer in December to sell existing shares at a price of $135 per share, two sources familiar with the matter said. The tender offer would value SpaceX at more than $250 billion, according to the sources. SpaceX did not immediately respond to a Reuters request for comment. Musk, the world's richest person, is expected to wield significant influence in Washington to secure favorable government treatment for his companies, including SpaceX, after