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The screen isn't there for your benefit. It's for the ads.

Don't they want to sell me food though?

Possibly yes, possibly no. It depends a lot on the margins. I wouldn't be surprised if food is a loss leader to get you in the door to make other higher-margin impulse purchases. In that case, letting you order food at the pump is an anti-goal because you'll complete the transaction before you're surrounded by other impulse buys.

It isn’t like that at Wawa. The reason they don’t take your food order from the gas station screen is because presumably they would have to serve you at the gas pump, which is not something they will do. You can just use the app to order if you want.

They also won’t bring your online/app order to the gas pump, you have to be parked in a regular spot.

There’s also the concern of updating the menu on the gas pump which (for Wawa) is a non-trivial problem.

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