Gas Shortages This Fall?

This article concisely and carefully explains whey gas lines and fuel prices in excess of $5 per gallon should be expected this fall:

The purpose of this essay is to highlight petroleum inventory issues likely to cause shortages this fall. Several events can create instant, grave shortages. Following is an incomplete list of known risks. There are still more unknown risks of unknown magnitude. As explained below, gas lines will be accompanied by a price jump of about $1.50 per gallon, even if crude oil does not increase in price.