How much crude will silence hunger pangs?
"Due to its high energy density, easy transportability and relative abundance, it has become the world's most important source of energy since the mid-1950s. Petroleum is also the raw material for many chemical products, including pharmaceuticals, solvents, fertilizers, pesticides, and plastics; the 16% not used for energy production is converted into these other materials." -- http://en.wikipedia.org/wiki/Petroleum
Despite its demonization, crude oil will continue to fulfill a vital role until until technologies like Hydrogen are fully explored.