Gas Prices... anyone else see something disturbing?

Take a look at this mapping of the price of gas in the Sacramento area vs the price of crude oil:

Notice a disturbing trend? BEFORE the price of crude topped out near $147.00, the price of gas had already peaked, and was falling. It peaked a full month before the price of crude did. Some thoughts on possible causes for this effect:

1. We were using A LOT LESS gasoline (3% drop? I can't see that causing this effect YET)?
2. Less trading? (I doubt this... but, if someone has this info, let me know.)
3. Someone in the oil industry (AKA refineries and huge gasoline companies) KNEW that the price would soon start falling on crude oil.

Now, personally, I am seriously betting on number 3. Insider trading and insider knowledge DOES affect industries, including this lovely volatile market. If this isn't a marker of this, I don't know what else is. After all, it was this industry that said we would see prices fall only after about 6 weeks AFTER the price of crude topped out. Hmmm... something wrong with this picture? I hope I am not the only one seeing this.