The use of LNG is the quickest way for the U.S. to reduce foreign oil imports, reduce foreign debt and increase domestic jobs. The government is one of the largest purchasers of domestic vehicles - all departments of Federal, State and local government. Mandate they all, with a few common sense exceptions, be LNG powered. Detroit would be busier designing and manufacturing new cars and spin-off tech.
It only takes the current Obama Administration to get behind it. Will they? Of course not.
Another approach would involve encouraging LNG fueling facilities at major truck stops along major highways. Perhaps not applying fuel tax to LNG for the first 5 years to encourage adoption. Long-haul tractor-trailers use a lot of fuel per month and spend much of their time on highways, so a few LNG refueling points could serve a lot of trucks.