"Relais Routier" is here: Gas, food and lodging are
available at astronomical prices. But it's the only gas on the
whole length of the road, so it's a good idea to fill up anyways.
If you're heading north, there's no gas for about 220 km.
If you're heading south, this is the last gas you'll see for 381 km.
And there's nothing else but forest, bogs, rocks, sky, and trees in
between, either direction.