Air travel is the best way to go long distances, but some small islands are not easily accessible by plane. For those places, we have ferries.
In a similar vein, most places in a city can be accessed via density + transit. But cars are great for those non-dense destinations you describe, like wilderness areas or farms or whatever else.
In a similar vein, most places in a city can be accessed via density + transit. But cars are great for those non-dense destinations you describe, like wilderness areas or farms or whatever else.