Elon's thinking goes back to college in areas he felt would affect humanity the most. These are Internet, sustainable energy (production/consumption), and space

Elon's thinking goes back to college in areas he felt would affect humanity the most. These are Internet, sustainable energy (production/consumption), and space exploration and habitation. He eventually would have companies for all of these: Solar City for production, Tesla for consumption, Space X for space and internet. It is amazing that he is able to get a moonshot chance at all of these.