President-elect Donald Trump has tapped Elon Musk to co-lead a new Department of Government Efficiency. And the CEO of Tesla and SpaceX, who is also the owner of X, does have a record of wringing efficiencies out of his businesses. But the move raises many questions, like should someone whose companies benefit from federal dollars have a hand in making budget decisions? SpaceX alone has secured about $15.4 billion in federal contracts over the last decade, helping it become the dominant player in the industry. So, how has SpaceX rocketed ahead of the competition, and can anyone catch up? Ashlee Vance, the author of “When the Heavens Went on Sale” and a writer for Bloomberg, pointed to reusable rockets, an innovation that was on spectacular display when SpaceX tested its Starship system last month.