a gallon just over the weekend. as of right now, driving 500 miles round trip from new york to d.c. or from l.a. to vegas, for instance, would cost an average driver a little more than 84 dollars. that's based on typical fuel mileage. average, i guess i should say, typical. the same trip a week ago would have cost 79 bucks. increase of 6%. gerri willis from the fox business network live now. this comes at a fragile time for the economy. >> g.d.p. is up. wall street profits are up. but, guess what, consumers still reeling from very high unemployment rates. for every one cent rise in gasoline, consumers have $600 million less of disposable income. bad news for them. >> shepard: oil prices spiked last week when all of this have heated up. now they have come back down. why gas. >> gas prices are still up. guess what gas station owners put their prices up as fast as they can. they go up faster than they come down. why? they can't keep up with wholesale inventory. they try to buy fast.