Boys remember the cost of fuel at the moment is not because it is running out but because they can't can't produce it quick enough.
The last oil crises was also because of production and it reached in todays dollars around $250 dollars a barrel. That was 30 odd years ago and here we are today.
There is plenty of alternatives to oil but while oil is cheap no one is willing to invest in new technology. This will start in 20-30 years.