After leaving his life in Gravestone behind, and resurrecting the Horde Kings which he had slain so far. Zane decided to take the highway south. Vegas was bound to be full of undead for him to farm. And achievements for him to unlock.
Not to mention on the way there lied several small towns, which may or may not have a Tier I Horde King in charge who he could kill and raise as a valuable servant. But he was in no hurry. Though he could easily traverse the distance between Gravestone and Las Vegas in the span of a few hours by simply walking.
Zane decided to use this time to think. And because of this, his pace was rather slow as he passed through an endless desert wasteland. Memories flooded the man's mind of childhood ventures from Reno to Phoenix.
And as Zane reflected on the endless brown wastes in front of him, he couldn't help but think to himself that there could not possibly be a more dreary and dreadful drive throughout the continental united states.