Whatever the future of petrol, you gotta consider they sell way more than fuel. They’re called convenience stores for a reason, which I semi-jokingly refer to as addiction stations. They can and do sell basically anything they legally can that people are addicted to, beer, cigarettes, soft drinks, energy drinks, candy, hot food, etc…

So, whatever the long term future of petroleum, the stores themselves for the most part aren’t going anywhere, they’ll keep selling every sort of quick grab fast selling goto items that keep the customers coming back.