What are the gas prices doing in the US ?
When I drove to work, this morning, diesel was $6.37/gal. On the way home, it was down to $5.80/gal. A $.57/gal decrease!
It's not unusual to to have a variation of $.30/gal, but a $.50 swing is pretty big...
By the way, I'm in Germany, so don't freak out and go running to fill up!