U.S. fuel makers ran below capacity in the second quarter in a preview of the challenges they are likely to face as the world transitions away from fossil fuels

U.S. fuel makers slashed production during the second quarter as they reeled from a historic decline in demand for gasoline and jet fuel.
Long a bright spot in the oil patch, refiners such as Valero Energy Corp. and Phillips 66 pumped the brakes as the coronavirus pandemic kept people off the roads and out of the skies, crushing demand for the fuels they produce.
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