in some countries, such as Thailand. Future possibilities Though ANG (adsorbed natural gas) has not yet been used in either providing stations nor consumer storage tanks, its low compression ( vs ) has the potential to drive down costs of NGV infrastructure and vehicle tanks. LNG fueled vehicles Use of LNG to fuel large over-the-road trucks LNG is being evaluated and tested for over-the-road trucking, off-road, marine, and railroad applications. There are known problems with the fuel tanks and delivery of gas to the engine. China has been a leader in the use of LNG vehicles with over 100,000 LNG powered vehicles on the road as of 2014. In the United States, there were 69 public truck LNG fuel centers as of February 2015. The 2013 National Trucker's Directory lists approximately 7,000 truck stops, thus approximately 1% of US truck stops have LNG available. In 2013, Dillon Transport announced they were putting 25 large LNG trucks into service in Dallas, USA. They are refueling at a public LNG fuel center. The same year Raven Transportation announced they were buying 36 LNG large trucks to be fueled by Clean Energy Fuels locations and Lowe's finished converting one of its dedicated fleets to LNG fueled trucks. UPS had over 1200 LNG fueled trucks on the roads in February 2015. UPS has 16,000 tractor trucks in its fleet, and 60 of the new for 2014 large trucks will be placed in service in the Houston, USA area, where UPS is building its own private LNG fuel center to avoid the lines at retail fuel centers. In Amarillo, USA and Oklahoma City, USA, UPS is using public fuel centers. Clean Energy Fuels has opened several public LNG Fuel Lanes along I-10 and claims that as of June 2014 LNG fueled trucks can use the route from Los Angeles to Houston, USA by refueling exclusively at Clean Energy Fuels public facilities. In 2014 Shell and Travel Centers of America opened the first of a planned network of U.S. truck stop LNG stations in California, USA. Per the alternative fuel fuelling centre tracking site there are 10 LNG capable public fuel stations in the greater Los Angeles area, making it the single most penetrated metro market. As of February 2015, Blu LNG has at least 23 operational LNG capable fuel centers across 8 states, and Clean Energy had 39 operational public LNG facilities. As can be