Video of Elon Musk talking about Making Humans a Multiplanetary Species

Elon is spending a few tens of millions of dollars per year now on the Interplanetary effort.

The plan is in the 18-24 month timeframe after the final Falcon 9 is finished, Falcon Heavy is done and reusability is worked out then most of the engineering team will focus on the Interplanetary system. The spending will increase to the $100-300 million range.

Multiple trips from Earth to Orbit to fuel up in orbit.