I got dizzy reading what you wrote. It's a joke... but next time try to be more clear.
Example:
I'm tired of flying, there's a new bus program in between Texan cities with luxury large seats that make travel from one downtown hotel to another easier and more comfortable. They also include the airport of Dallas Love Field. Here's a link to the site:
www.vonlane.com
Also most of us don't live in Texas. I get it that A is Austin, D is Dallas, and H is Houston. Do you mind saying it? I get the "pass me the mayo", or "do you have OJ" but c'mon! I thought you were saying A D and H as saying traveling from point A to B. You need to read before posting, to know it makes sense to others.
answering your question, yes it's only in Texas, but as we all know Southwest was only Texan for many years, later on it became national, I think they fly to Mexico now or they're trying to.
He wasn't assuming it, he was just trying to promote it.
What's normally known to some may not be for others.