Just off Rt 7, on the north side, just east of Baron Cameron. Says he's out there every day. Just had two pork tacos and one beef. Excellent with fresh ingredients and a nice spice. Meat cooked well.
My coworker got two chicken tacos. I think that while it's boiled, he finishes it off on the grill top.
All in all, I think this is even better than the place in the Dranesville clock tower, especially in terms of service.