"If you buy a Tesla today, I believe you are buying an appreciating asset, not a depreciating asset."
And the reason: "Musk's prediction is based on two assumptions: Tesla vehicles will be able to drive themselves without any human input by the end of 2019, and customers will be able to make money from their vehicles by including them in an autonomous ride-hailing service Musk says will be ready next year."
As Elon would say "Let that sink in".
This is one of the major reasons he's in the White House now. Otherwise he would be in prison.