Bloomberg has an interesting article on the use of LNG to fuel service trucks. "The chief operating officer of oil services company Ferus Inc. bought two vehicles to test liquefied natural gas and reckons switching from diesel may cut 22 percent from his fuel bill, or about $1 a gallon. At the moment, Calgary-based Ferus uses mobile tankers to refuel his trucks, which cost about C$100,000 ($99,000) more than conventional vehicles, adding expense to a project that’s about saving money. A Royal Dutch Shell Plc (RDSA) project will make it easier to fill up."