Trips to the gas station are getting more painful for drivers, as prices at the pump have spiked due to crude oil topping $102 a barrel and diesel hitting new records daily. Experts said prices could approach $4 a gallon by spring. What's at stake? Harvard economist Kenneth S. Rogoff told The New York Times, “The effect of high oil prices today could be the difference between having a recession and not having a recession.” That means difficult days ahead ...