It's best to stay near the pump when dispensing gas or diesel instead of getting back into the car. It doesn't matter if you take a minute to clean the windshield, just stay out there and pay attention to what's going on with the pump. This is also a good time to walk around the car and look at the tires to spot any obvious problems. You will still be able to hear the click as the pumping stops, and that's your cue to remove the nozzle and return it to its dock on the pump. Close the gas filler on the car, then grab your receipt. If you must go in to the store to pay, lock the car first with your fob. Routines like this may sound a little OCD, but what you are doing is training your brain to run a program that covers all the bases so that you don't have to think anything through every time. Getting back into the car while the pump runs opens you up to a break in the routine where you fiddle with the radio or look at your phone, making errors more likely as your brain is not concentrating on the job at hand.