Street Tacos on 9th Street

I was driving on 9th street at 8:30 PM last night. As I drove passed the Bi-Mart parking lot, I saw the street tacos vendor. This is my second time seeing them. I do not see anything about them, like schedule or what restaurant they are from. I stopped to get some tacos and a drink. They are really good. I went back at midnight to get some more and they were busy. It is great to have something like this for night owls. Anybody when they will be back again?