It all relates to the density of energy in fuel.

Fossil fuel is so energy dense you can get away with pretty much any way to distribute/dispense.

what infrastructure are you left with? Trucks?

Trucks and most importantly thousands of strategically located gas stations. Even if you distribute a different kind and less dense energy I would argue it still makes sense to have spread out stations all over the place.

If we want to keep using our existing roads and highways we will need those stations even if they distribute something entirely different.