Energy factbook

Currently, 52 per cent of Planet Earth's daily energy consumption is expended on transportation:

• cars make up 25%
• planes, trains, trucks and ships 27%. 

That other 27% is globally embracing and incentivising liquefied natural gas (LNG) to the extent that a thousand ship LNG fleet is possible by 2020 and the first LNG-powered commercial flight took place this year. 

Heat and power generation, which in many countries is already fulfilled by natural gas, makes up a further 16% of barril per day consumption.
Up to 68% of global oil needs could be supplanted by natural gas, supply dependent, of course.
Even as oil becomes "too difficult", advances in nanomaterials may soon allow greatly enhanced oil recovery by reducing the adhesion of hydrocarbon molecules to rock, and nanoscale sensors are allowing us to interpret wells in a more acute way then ever before. Still there is around 60% of oil that is till date unextractable though the advances in technology makes it drop every year a little bit more (see figure on the left...