So long, Donald. Don’t let the door hit you on the way out.

With Joe Biden’s inauguration just hours away Donald Trump, now no longer president, has quit the White House and Washington D.C. completely. Under normal circumstances the former president and president-elect – in a show of national unity – ride in a car together from the White House to the Capitol where the inauguration takes place. No matter how icy relations between the incumbent and their predecessor this tradition, which started in 1837, has been honoured on every occasion except once. Now, Trump joins Andrew Johnson as the only other president to break with it – unsurprising given Trump’s continued unwillingness to accept the legitimacy of his defeat.