A fuel storage and delivery system for a refrigerated cargo vehicle. The system includes a first fuel tank for storing natural gas and a second fuel tank for storing natural gas, at least the first fuel tank is for storing the natural gas as liquefied natural gas (LNG); a vehicle fuel supply line fluidly connected to the first fuel tank for supplying fuel from the first fuel tank to a vehicle engine; and a refrigeration unit fuel supply line fluidly connected to the second fuel tank for supplying fuel from the second fuel tank to a transport refrigeration unit engine.