I find it hard to believe Topeka guys were driving all that way also, especially when Lawrence, Manhattan and KC have so many more opportunities than just a few holes in the wall. Heck, up until a few weeks ago, one of the ABS on S. Topeka Blvd had 6-8 holes and no waiting. The other ABS is still hopping even though there are signs posted everywhere saying "you're breaking the law if you fuck other guys here."
I'm sure all the Topeka guys had on their "I'm a Jerk and I Come From Topeka" nametags. That's how they could tell. (Or just the fact they were jerks automatically pegged them as having come from Topeka.)