So, who was Elon Musk before he became a billionaire? Here's the story

Worth $21 billion, Tesla's chief has been through the grind, being ousted as CEO of his start-up and fired from his Paypal CEO role while honeymooning

At 12, he taught himself how to program... and consequently made a sci-fi inspired video game and sold it to South African tech magazine for $500. 

While he was studying at Unversity of Pensylvania in 1992, Elon Musk used to make an entire month of his rent in just one night, coding stuff.

Musk once applied for and failed to get a job at 'Netscape'. He was ousted as the CEO of his start-up. He was fired from his 'Paypal' CEO role while he was on a flight to his honeymoon.

His motto: If things aren't failing, you're not innovating enough.

In 1995, he