Stockpile your gas now! $4 a gallon gas might be on the way!

According to this article from Grist.org, gasoline supplies right now are at historic lows. If we have a hurricane or a terrorist attack or any other serious scare, gas prices are piqued to hit the roof.

Or you might just consider a hybrid or a biodiesel or simply driving less or taking public transportation. Oh, and what was Exxon's profit last year??