Smoke Shack (Austin, TX)

Heading up Hwy. 620 last week, I saw smoke coming out of a trailer next to a food cart so made a quick exit off the road. Turns out it's a new BBQ trailer called Smoke Shack (don't know address; my guess is that it's about 4 miles N of Hwy 71 on 620). The guy that runs it (James, I think) told me he opened 7 weeks ago and that he already has a loyal following out in the Lakeway area. Anyone been? I didn't stop to eat, since I had just finished lunch. He told me the brisket wasn't quite ready yet but gave me a few small slices anyway. It wasn't ready. James (Someone, pls correct me on this, if I'm wrong about his name.) wants to bring some Louisiana flair to Texas BBQ, so he puts a Cajun rub on his briskets. Not sure about the other meats. Looking forward to having a proper roadside meal next time I'm in Lakeway.