If it's Chevron, I'm wondering if people could actually use the card, get a receipt for the gas used and then (if the Chevron is Terrible Herbst connected), then take the receipt to Terrible's LV Casino Slot Club and get the amount of Dollars spent in points.
Terrible's has for quite a while had an ongoing promotion that if you get gas at one of their Terrible's connected gas stations and then take the receipt to the casino that the player would get an equal amount (of the money for the gas spent) in Slot Club points. So this means that if you got $41 in gas, then the casino would credit your Terrible's Slot Club account with 41 points.
There definitely are some Chevron Stations around Las Vegas that are Terrible's Casino connected. So check into that if you're interested (if they allow that).
RecVPPlayer