How much energy are you getting from the gas you are buying?

An article titled, "When Consumers feel the Heat, Big Oil makes Cold Cash" by Brian Beutler explains how America's oil consumers are getting ripped-off.

This article starts,

"It's probably intuitive to most people that the gasoline in their fuel tank expands in the heat—just like doorframes and cookware and everything else on the planet. What's probably less intuitive is that, in the United States, this physical phenomenon pumps a nearly $2 billion annual windfall out of consumers' pockets and into oil company coffers, according to numerous calculations, including a recent House of Representatives study... (more) "