In state where driving is part of life, president’s pledge to lower prices at the pumps cuts little iceBehind the granite countertops of Fuel City, a gas station in Dallas where taxidermy deer flank the entrance and hot tacos are served 24/7, Alina Cardenas sees first-hand that Texans are stretched thin.Drivers are filling up less, she said, while ringing people up for cigarettes and beer, and fewer people are buying a full tank. Some stop once they’ve reached $10 or $20 worth of gasoline. Conti