Now there is just one nozzle with buttons to select octane. Sometimes I think there is just one big tank underneath the gas station that has one type of gas that goes to all nozzles. And people that buy the more expensive gas are suckers.
I actually knew a small grocery store that did this exact thing back in the 90's.
There was only 2 tanks for the supply tanker to fill, and one of them was diesel. Yet, they sold 87, 89, 92