Answer by Tom Lindholtz
I ran across this graphic the other day. It is a little bit tangental to your question, because the terms that are usually used don't really address the oil that is "suspected" to be there but that is legally unavailable (due to failure of the government to permit drilling), or that is economically or technologically impractical at the present time. The great irony for libs is that if they succeed in driving the price of oil higher -- in order to make wind and solar more feasible -- they also increase the amount of oil that is economically practical. Bottom line, petroleum packs a bigger energy punch than any of the alternatives available for transportation. And only nuclear packs a bigger punch for stable uses.