If the car is clicking and not turning over there is a mod you can do to remedy the situation. I did this mod and have been starting normally for several months now. It involves a 30 amp relay, some wire and some terminals and splices.
The details are here.
Car not starting randomly? READ THIS (30 Amp Starter Relay Mod) - SupraMania
The gas mod sounds interesting but over here in Kuwait LP gas and Gasoline are to cheap to worry about doing a mod like that.