Yeah, but it was not included in the proposed national map that came out. I still think the T-bone thing is stupid. They should directly connect DFW and Houston and T-bone off to San Antonio.
Can't really do that. The route between DFW & San Antonio is MUCH more densely populated with multiple population centers served, including the State Capital. Keep in mind that rail is extraordinarily expensive (which I still can't figure out) and its success as a passenger option must be in direct competition (or congetion aleviation) to other modes of transit, ie: I-35.
I think that a practical routing would be San Antonio with alternate trains serving Dallas and Ft. Worth - NOT going through one to get to the other (that already exists with the TRE). Additional route would be from Austin to Houston. Most trains from Houston would term in Austin, where you can then decide to go to San Antonio, Dallas or Ft Worth. This is completely doable if you're on your own ROW and don't have to have your route depend on the freights. Obviously the disadvantage would be Houston straight to Dallas.
What makes my suggestion even possible is that you can almost paint a straight line from Houston to Austin without having to serve intermediate towns. Same with San Antonio to Austin to Temple to Dallas (or Ft Worth). Problem with Dallas to Houston is the mega void inbetween (except College Station).