So if this is correct and considering every long journey requires breaks can ford produce a fuel calculation in the ford trip computer to calculate the maxuim amount of fuel needed for certain types of long road trips with the knoweledge of where each petrol station is located.If this aplied to even 50 % of journeys world wide how much fuel will this save and why not included fuel figures in your brochure for the additional mileage gained by using this method.ps inconjunction with bp new preset fuel pumps that talk to your fords trip computer which will also elimanate the wrong type of fuel going into any ford more fuel being saved.