No,there are times that a stand alone GPS would be beneficial because I don't believe google maps works fully when there's no cell service. Like real time traffic and accident locations. You need cell service to get that stuff. You can transfer the RV Trip Wizard file to a GPS unit but I can't get it to work. I have a Garmin so the protocol is to use Base Camp. It's not a user friendly program. Some people say they have no problem using it so it could just be that I have difficulty. I suppose I could manually enter everything into my Garmin but that's a lot of work if it's a long trip you're planning. Checking fuel locations for access is going to depend on the size of your RV. Obviously the bigger the RV, the more room you need to maneuver. I have a 34' 5th wheel so I need a decent amount of maneuverability and height clearance where a truck camper or class B won't have those concerns. Nothing is going to be fool proof. I found what works for me while others use different methods and find that works for them.