It opens the gas tank and unscrews the cap. After pumping the gas, it screws the cap back on and closes the tank cover and away you go. While this new type of gas station isn't in Wisconsin yet, you can be ensured it will be. The people dressed in their Sunday best won't have to get out of their cars again. It'll be just like the old days.
Technology can really improve our way of living, but only when it includes everyone.
Don't be surprised that if in your lifetime you hear about a car that does all the driving for you. Yesterday's science-fiction is today's technology. Used under License.