There are a couple of reasons for this.
One is that we're never provided with any reason to care about the main character, or anyone else in the story. They have no goals, no motivations, no backstory to speak of. The MC doesn't even actually want to go to Wichita. There is no conflict, and therefor no resolution.
An even bigger reason is that, aside from witnessing a lot of disgusting scenery, this guy is simply along for the ride. It's not a ride he likes, but it becomes obvious that he can't get away; when he tries, it doesn't work. He can't be harmed, either: whenever something looks like it might actually threaten him, the tour guide (or some deus ex machina) pulls him out without a scratch.
Worst of all is that this character is unable to act at all of his own volition (eliminating even the possibility of conflict; see above). The tour guide made a most disingenuous statement at the end, when he said,
Sorry, but his will had nothing to do with it; he was pushed, dragged, and magicked every inch of the way, against his will."Congratulations!" the old man said, standing next to me. "You've made it back. I didn't think you had the will do to so."
Keep trying, Mr. Gonzalez.