Like any "environmental lawyer" this author is lying by omission. The fact of course is that we will never run out of oil. As the price rises, new supplies become available. And new technologies have already accessed large reserves once thought beyond reach in old fields. Given the chance, market driven conversions to NG and nuclear will see us moving on to other energy sources long before the oil supply is exhausted.
As in the past, any and all "oil shortages" will be the result of political manipulation, not some terminal decline in supply.
‘zackly.
If the price message is not interfered with, oil (or its substitute) will last indefinitely.