The price at the pump

[FlFishOn]

My guess is that next year we'll look back fondly at the time when gas was only $3 a gallon. I was researching (not too successfully) the cracking spread or the refining margin between crude and gas. I once found a beautiful graph that showed exactly how much I got screwed over on summer priced gas. This time I see that refiners aren't getting rich right now and if crude stayed at $75 we can expect $4+ gas soon. Has anyone found a neat, tidy graph of the refining margin? Please post it if you find one.