This report analyzes the use of natural gas as transport fuel at present and in coming years with a focus on the U.S. market. Natural Gas Vehicles (NGVs) and fuel stations are covered from both a technical and market point of view. Technical aspects including current technologies, fuel switching , infrastructure and environment/safety with a focus on CNG fueling stations are studied, as well as the use of CNG in vehicles and LNG fuels in the bunkers market.