I'm so happy there is a taco truck in town! I eat here a lot. I've personally had the tacos, burrito, torta, and elote. All are very good. As for meat options, I've tried the steak and the chicken (only two I can eat out of the usual selection). Both are good, but the chicken is something special. I'm not sure how they prepare it, but it has great flavor.
You must get the salsa, both kinds. Like the restaurant run by the same folks (Mas Amigos), the salsa is utterly fantastic and makes the dish.