A new surge in rocket development: no expense was too great. ibid.
This idea – to use hydrogen to power rockets – was as profound a breakthrough as a discovery of other worlds beyond Earth. ibid.
Rockets need a new revolution. ibid.
In planning a trip to Mars, Musk believes he can also capitalise on the business opportunities that are opening up in space. The Elon Musk Show I, BBC 2022
A month after SpaceX is formed, a buy-out of Paypal nets Elon Musk $250 million. Elon immediately tells his new group of engineers, they have just over a year to become the first privately owned company to build a rocket that makes orbit. ibid.
2014: 19 years after starting his first company, Elon Musk now has a network of $19 billion. Tesla is starting to become a household name with mass market appeal, and SpaceX has cornered the lucrative market for launching commercial satellites into orbit. The Elon Musk Show II
Musk hopes his rockets will turn humans into what he calls Interplanetary Species. Elon Musk: Superhero or Supervillain? Channel 4 2022