Yesterday, the Independence Day holiday, was a key milestone of the summer driving season. Driving mileage typically increases in the summer season from Memorial Day through Labor Day, with the greatest driving increase occurring between 4 July and Labor Day. Starting this week, U.S. retail gasoline prices averaged $3.50 per gallon on Monday, 1 July, which is an increase of 14 cents from a year ago. However, average gasoline prices for the first half of this year are eight cents below average prices during the same period last year. This summer's increased driving season will not match past years' if it goes as projected by the U.S. Department of Energy's Energy Information Administration (EIA). The demand for fuel is starting below the 2...