Since Elon Musk's removal from Trump's administration and loud disapproval of the president's agenda bill, it seems their bromance is well and truly over.

It’s no shock the ‘short-lived romance’ between Donald Trump and Elon Musk has come to a crashing end, according to an expert on US politics – it was all a question of ego. The US President and the world’s richest man formally brought their working relationship to a close last month in an Oval Office press conference.

Elon Musk's departure from the Trump administration means investors will hope he refocuses on his sprawling empire. Now what?