I believe oil can stay in the 30s and 40s for quite some time, but the problem is the environmental degradation of fossil fuels and changing the chemical constituents of the oceans, ground and air will make the true price of oil more like $100 or higher. And there is no way fossil fuels, therefore, can compete with solar panels, electricity, wind, nuclear, geothermal, etc. Elon Musk is right. But what if the demand for oil rises to over 100 million barrels a day and we can't produce more than 95 million barrels? That's the end of the fossil fuel industry as we know it. The full interview below (Musk begins talking around 42 minutes in)...