Our guide HELEN was wonderful and tried so hard to make this a perfect experience. But she was stuck with a truck that had mechanical problems and appeared to me to be in bad shape. There was an exhaust that caused a bad odor in the passenger area. And really it was cold and windy and it wouldāve been nice if the company had provided blankets or masks for the passengers to wear. However, monument valley is so spectacular that even a horrible truck cannot ruin the beauty of this experience.