They're supplied almost exclusively by truck, just as diesel would be supplied. You would see a value chain identical to that for diesel in that the refinery is a liquefaction plant, which is a plant on a large pipeline that's liquefying or chilling the natural gas until it turns into a liquid, and then it's dispensed into a truck. For example, in the Gaz Métro plant in east Montreal it's dispensed into a truck. The truck then takes it to Boucherville, dispenses it into the station's tank, takes another load, for example, to Mississauga, and then returns to the liquefaction plant to pick up another load.
On May 15th, 2012. See this statement in context.