Does anyone here USE or KNOW anything of FuelBook ? It is an app, that looks like it MAY be a good fuel stop planning tool. I don't know where they get, nor how accurate their price info is, don't kno...
Just finished a 4000+ round trip to Florida. Used GasBuddy on my android and Laptop. Found diesel prices to be up to date and accurate. Map feature let's you plan your route/stops and is very user friendly.