Gasoline may continue to be in short supply after a weekend cyberattack on one of the region’s major gas pipelines. Drivers from Maine to Florida are rushing to the pumps, waiting in lines that are reminding people of the oil crises from long ago. And it’s not just in short supply, it’s expensive. Nationwide gas prices are at a 7-year high. But there are things you can do to make your gas last longer, says AAA’s Robert Sinclair. Carpooling and driving at a lower speed are just a few options.