Kinda makes it sound like they've got too much road. Property taxes are only a thousand or three per single family household, I believe.
Honestly, I'm not really sure how it's all paid for at the end of the day.
That $40k of road is only $800/year over 50 years. (And I doubt all of it was even originally as expensive as your estimate, especially considering cost of land, which was closer to zero before there was a road there).
Of course, maintenance costs have to be counted, too, and in the case of fiber, it would, instead, be eventual upgrades.
I do not know of any trails you would absolutely need a car to get to. One of the more popular places to start a hike, Chautauqua, actually started a very expensive paid parking program to get people to stop driving there (parking is limited, complaints from residents over noise), and instead take the free shuttle from city center.
Anyways, my home internet is absolute garbage (I'm just west of HW36, so outside of the city by a block). My speed is 5.05 Mbps down, 0.47 up and there's no alternatives to Century Link in my area. I might as well use a cellular network.
It's just whatever the local subnet is for my neighborhood. Across the street, the DSL is much better.