To sell fuel or support a fleet. The simpler the system, the more desirable the system. Simplicity means less employee training, less reliability concerns, less hassle. These are the dimensions that are important to the station operator. This is the environment in which he is used to operating.
Simple equipment means unattended operation and responsive service.
Single hose operation . . . The nozzle remains free of LNG when the next driver connects his vehicle. The lack of LNG present in the nozzle between fuelings means that frost build-up on nozzle is eliminated, or, at least, minimized. Hose breakaway protection. Simplifies handling of hoses.