We see that all the time here in Nebraska.
I-80 goes through my county, and is the main route for drugs from the west coast to the east coast, and drug money from the east coast back to the west coast. I boggles the mind how stupid some of these "mules" are.
One bonehead from California recently got busted with a million in meth in his van 'cause he stopped and took a leak in broad daylight on the shoulder of I-80.
It's almost like they WANT to get busted. And it's possible they do. About 20 years ago, a local guy was growing marijuana and had a brother selling it on the west coast. When they got busted, the judge was going to let the guy out on bail. The guy pleaded with the judge not to. He figured he was safer in jail than on the street at that point.