U.S. President Barack Obama says vehicle fuel economy standards set under his administration and better cars built by a resurgent U.S. auto industry will save money at the gas pump over the long term, a counterpoint to Republican criticism of his energy policy. In his weekly radio and online address Saturday, President Obama said Detroit automakers are on track to build cars that average nearly 55 miles per gallon by 2025, doubling current mileage standards. \'That means folks will be able to fill up every two weeks instead of every week, saving the typical family more than $8,000 at the pump over time,\' he said. \'That\'s a big deal, especially as families are yet again feeling the pinch from rising gas prices.\' \'What\'s happening in Detroit will make a difference. But it won\'t solve everything,\' President Obama said. \'There\'s no silver bullet for avoiding spikes in gas prices every year.\'