The reason for the lpg is I can use it almost daily, I plan to use the available forklift bottles as the main source of fuel with occasional top ups roadside at the pump. The forklift gas works out about £0.25 versus £0.65 at the pump. Pump price is still half the price of petrol over here so using the cheapest option a car doing 10mpg would '£ for £' return the equivalent to over 40mpg.