This explains one of the more bizarre sightings I've made on a roadtrip. Halfway from Houston to some no-name hamlet in the middle of the state I spotted an ostrich running down the opposite shoulder of the highway. A quarter mile later I spotted a dude trying to run in cowboy boots, 100 yards farther a cowboy hat on the ground, and just a little further a dually with an open livestock trailer parked at a rest stop with no driver and no livestock present.