Gas is $4.51 a gallon heading into Memorial Day — the highest in four years and $20 more per fill-up than last year’s holiday weekend
Maria Gonzalez, a preschool teacher in suburban Dallas, watched the pump display tick past $65 on Tuesday morning and pulled the nozzle early. She still had half a tank to go. “Last summer I could fill up for under fifty dollars,” she said. “Now I’m doing math in the parking lot, figuring out which errands…