I know board members are into the trailer/truck scene so I thought I'd post that three trucks come weekly around noon to the Google building (Stonebridge I) at Mopac and 183.
Tuesdays - Short Bus Subs
Wednesdays - The Peached Tortilla
Thursdays - Chi-Lantro
I've had Short Bus. The sandwiches are tasty, but really small for what they are charging. Not a great value. I haven't tried the other two.