I am pretty certain they don't have a super clear notion of cross contamination. You can get tacos in a bowl or on corn. I ate here frequently for awhile, as its around the corner, unfortunately I had mixed experiences or I would give more stars as the food is very tasty. Its definitely a gamble if you are celiac or highly sensitive.
A little hard to find (it's a food truck tucked inside the lot of a bar called Little Woodrow's). Their website sways they have gluten free options, and says to ask staff what they are. I had to remind the cashier what gluten free means, but the tacos I had tasted pretty good.