The Unhanged (1971)

Two outlaws, The Lonely Rider and the Indian Tonto, have caught (at least they think they have) Speedy Gonzales, a ruthless gunfighter from the town of Njietponimaistadi. They start to travel to another town for the reward, through the desert without water and fighting against Indians. And just to find out that they have made a full circle back to origin.