This'd be an interesting detour, to ride on for the TE. I'll have to look at this route on Google Maps, later. It is interesting to think there used to be a branch of the TE that ran from Dallas to Houston, years ago.
I was fortunate to get to ride the Texas Eagle from Houston to Arkansas when I was a Senior in high school.
I was able to ride from Dallas down to Houston back in the late '60s. My dad took me down to see the Astros play ball in the Astrodome - better known as "the eighth wonder of the world" back then. What I remember most about that train trip was going to the dining car and eating supper. For dessert the attendant brought me a slice of apple pie with cheese melted on top of it and vanilla ice cream on the side. Until then I never knew that you could get apple pie with cheese on it I still remember that moment just like it was yesterday. I also remember riding a train between Brownwood and Ft. Worth back in the mid-60s. We had family in Brownwood and would take the train a couple of times a year to go visit them. Not sure when the service ended but when it did we transitioned over to Continental Trailways bus service. Great experiences with riding trains when I was young.
Now a days all of the similar experiences with my kids is from riding trains around Germany, Austria, and Switzerland. When we go over we get a Rail Pass and basically spend our days traveling around those countries via rail service. The scenery is gorgeous and the trains and rail stations are great. Riding trains = great memories!