Fed Chair, Ben Bernanke is set to speak about the economy on Wednesday. Marie Dodds at Triple A says, what he says may have an effect on gas prices. Oregon's average for a gallon of gas is $3.88 this week, two cents above the national average. Diesel is up a half a cent both nationally and here in Oregon where the average is now running at $4.29 a gallon. In Bend, you'll pay about $3.87 for a gallon of regular this week.