When Jay Ricker, owner of the BP filling station off Interstate 70 in Plainfield, Ind., set the price of unleaded gasoline at $3.44 per gallon on Monday of last week, it was 4 cents higher than the Friday before.That alone might have been irritating to drivers paying the highest gas prices in more than two years. It was even more so because it happened on a day when the price of crude oil, which i...