U.S. gasoline and distillate stocks surged unexpectedly last week, data showed on Wednesday, crimping margins for refiners at the height of summer driving season, a time when they generally enjoy healthy demand and profits. Almost two months into the start of a summer when Americans were expected to take to the road at record rates, some 1.2 million barrels of gasoline landed in storage tanks last week, the Energy Information Administration said on Wednesday. That shocked the oil market after analysts had forecast a 432,000-barrel drop. It was the fourth inflow since the end of May, the official beginning of summer, and it took inventories for this time of year to their highest in at least a quarter of […]