The thing is, the car and reusable rocket stages exist and are far more difficult to pull off than creating and running an ad-network. I am not saying ad-netwo

The thing is, the car and reusable rocket stages exist and are far more difficult to pull off than creating and running an ad-network. I am not saying ad-networks aren't complicated and involved and require highly intelligent people, but I don't believe them to be comparable to what Musk is delivering.