Can RVers get the cash price for diesel at Flying J/Pilot?

I am not going to worry about a few cents here and there. Hit the truck stop at the time I need fuel, hit the truck lanes the wife goes inside and pays and of course shops while I am fueling. I give her a call then hangup indicating I am done so she can pay. I pull ahead she finishes in side then comes out with her purchases and we are on our way!

Easy off and back on the freeway.