After 130 days spent fighting the federal government, Elon Musk turned up with a black eye at the White House on Friday for his last day as a “special government employee.” If you squinted, you could see it: His right eye socket was puffy and empurpled. No doubt about it, that was a big, fat shiner.

Elon Musk's time in the Trump administration is coming to an end after a tempestuous 129 days in which the world's richest man took an axe to government spending - stirring ample controversy along the way.