Petroleum has been a major strategic factor for 100 years, since Sir Winston Churchill decided to dump coal for the Royal Navy and switch to petroleum from . . . Iran. Seems we have got to start closing the spigot on petroleum now so that we have more time to adjust to the realities of 21st century living. Perhaps switching from petroleum will yield the same benefits that switching from coal did: Longer range, cleaner exhaust, greater efficiency, faster speeds, and new modes of transportation. As you recall, there were (and are) no coal-powered aircraft.
(By the way: Opiniomations = Opinions based on Information)