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by deftnerd 2361 days ago
For optimization, I would just make it easy to remove the payment process and selecting the fuel grade.

Everytime a car drives up, use a camera to determine their license plate number. If they are a new customer, ask them if they want to save their payment information and fuel grade preferences. If so, everytime they come back, the pump can display "Welcome back John Doe, you can begin pumping".