Look up Buford, Wyoming. It's about halfway between Cheyenne and Laramie on I-80. If memory serves me correctly, the town was put up for auction on Ebay. 😆 I think it was bought by a Vietnamese guy who wanted to open a coffee shop. There's a gas station there; I don't know if the coffee part is still going. My friend and I went out to the Hidden Falls in Vedauwoo/Curt Cowdy State Park. We stopped there for gas after midnight. I feel bad for the guy who had to do that shift there. Wyoming has quite a few towns that have signs telling you where the town is, but just the elevation, no population whatsoever.
https://en.wikipedia.org/wiki/Buford,_Wyoming
Driving long distance to save $.20 cents/gallon at MOST saves yo $3.60...and likely costs you more than that (factoring wear and tear on your entire vehicle, not just the gas, MY LIVELIHOOD) makes ZERO economic sense, and that is not even factoring in the time involved.
Are you serious? Population of ONE???