Which 5 future ventures is Elon Musk betting on in SpaceX's mega IPO?

Elon Musk's SpaceX is betting on five futuristic businesses to justify its blockbuster IPO valuation. These include Earth-to-Earth transit in 30 minutes, orbital manufacturing hubs, space tourism and asteroid mining. The company also plans to handle logistics and build the infrastructure needed to establish permanent human settlements on the Moon and Mars.