Oil isn’t an issue. In fact, if we do run out of it, it will be at a time when it doesn’t matter. There will be no energy deficit. Hundreds of companies are pouring Billions of dollars into alternative energy and materials for everything from cars to home heating to tupperware. If you can build any substance molecule by molecule, power an engine with pure water, and store large amounts of sun/wind-produced electrical energy for years, where is the need for oil?