El Novillo Taco Truck lives outside of Gaudalajara Mexican Restaurant (even though their eponymous sister taco truck is on 44th and international). The burritos are reliable and there is often a line. Somehow the food tastes way better than the food inside. Ask for not lettuce (which does not belong in a burrito).
In 2015 El Novillo received the Best Super Burrito on a Taco Truck award from the East Bay Express.