I live in Kentucky. Gas rose between $1 and $1.20 during a four hour period last night. Some stations had gas for $4.59 last night at 10 PM. This morning they were at 3.89. Fishy, at best.
Gas is now $4 here.
I have a sister who worked at a convenience store chain. They had no say, the would get the call and be told that their supplier put the price up, and they should go out and change the sign to read a higher price per gallon. When oil was on an upswing this happened two or three times a day. But now that it is going down, it happens only once a week or so.