It's very efficient. Up to about 500 or 600 miles, it can be very efficient to truck liquefied natural gas. There was a pipeline that operated for a number of years in China where they were trucking liquefied natural gas from northwest China almost 3,000 kilometres to southeast China, to where the industrial heart is. It was basically a rolling pipeline, because the cost and time to get that pipeline built exceeded their needs for gas now. So they started running fleets of 400 trucks at a time as a truck train down the highway.
On May 15th, 2012. See this statement in context.