That would make entirely too much sense, much easier to destroy rail lines perfectly suited for commuter use to expand the freeways.And to throw my 2cents in, I think Texas, like the rest of the good ol' USA needs more rail lines, commercial and metro commuter. It just makes sense to me (then again I spent a lot of time oversees, and that might be influencing my opinions)
I think you guys are confusing the TTC with the long planned federal I-69 project.
The Trans Texas Corridor was the one that would parallel I-35.
I-69 is a totally different project that will pretty much replace US-59 in Texas. It was never planned as part of the TTC or involved in the financing of the TTC, and as far as I know, the upgrading of US-59 toward this is still in progress.