7 cents off a Gallon of Gas at Pilot/ credit card.

I mapped out a trip that I'm thinking about taking that is roughly 2400 miles each way, for a total of 5000 miles to provide some looseness around the edges.

At 7 cents a gallon savings and estimating 8 MPG, my total savings for the trip would be $43.75, assuming that I could fill up at a Pilot or Flying J every single time. For me, this is not enough of a savings to bother with getting a charge card when I already get cash rewards on both my check card and regular Visa card.