New York (AFP) – Only time will tell how much record US prices at the pump will dent driving demand this summer, but don’t expect a significant increase in gasoline supply from American refineries. The reason: Several US gasoline refineries have shut down in recent years, or been converted to make other fuels, crimping America’s refining capacity and exacerbating the hit from high crude oil prices in the current energy crunch. US refineries operated at 93.2 percent last week, the loftiest level since December 2019 and an exceptionally high rate for a season normally associated with plant maint…