This is from 2012 but seems pretty close to what I dealt with there last year: https://www.tripadvisor.com/ShowTopic-g293977-i1733-k5730382...
Which is to say: every country has its weird thing. :-)
Years ago (this predated energy drinks by a couple decades) I filled up at a rural station in GA that had old mechanical pumps. I went inside to pay, having not taken note of the cost. When the cashier asked me how much I'd purchased and I told him I'd have to go check, he waved me off and pulled out a pair of binoculars to read the charge off the pump.
I like to think now he foresaw the coming age of skimmers and wanted his pumps to remain immune.
It was so odd going to Germany last month, and actually being able to pump and then pay in the shop afterwards.
I'm not sure, but I'd expect that if you don't have a US zip code you can just go inside and use your card with the cashier.
First world problems, yes :)