> scaling to a few hundred isn’t easy or viable That seems wrong to me. I mean, objectively I'd expect the construction expense of a gasoline fueling station

> scaling to a few hundred isn’t easy or viable That seems wrong to me. I mean, objectively I'd expect the construction expense of a gasoline fueling station to be much higher than just running more electrical distribution lines to a major shopping area. I think you're making the mistake of comparing the "cost" of new construction to the sunk cost of existing infrastructure. Those gas stations don't last forever and the cost to disassemble and rebuild them needs to be part of your analysis.