Elon Musk has slept on Tesla's factory floor and instructed SpaceX employees to walk out of meetings where they aren't adding value.

President-elect Donald Trump and Elon Musk have big ambitions for making the federal government leaner and more efficient by reviewing its budget and operations from top to bottom.

Republicans have secured a majority in the House of Representatives with a two-seat advantage. However, it is quite slim because some key races have yet to be called. President-elect Donald Trump's cabinet nominations have also raised concern about the possibility of seat vacancies.