I drove my diesel motorhome from California to Oregon. I had planed on fueling up with about 125 gals of diesel fuel after seeing the cash price that was advertised on Gas Buddy. I wound up paying 15 cents more per gal because they said they dont honor the cash price on Gas Buddys app. When I asked why not, they said it is up to the owner and that is his decision. So I guess if you want to get the cash price you had better call to see if the station you are going to honors the "cash" price.