There seem to be two in town. La Fortuna is the best $1.25 buy in town.
My carne asada on two soft corn tortillas had onions and cilantro and came with red and green sauce on the side, fresh radishes, a fresh green onion and chips.
The $1 horchata was one of the better in the area with a nice vanilla taste.
They had a larger selection of meats than the other taco truck and today they had buche. They are always busy. They are located in the San Pablo Gas station across the street from Raley's.
Tacos Rodrigues in the lot on 501 Appian Way only gave you the taco with a few pieces of chopped onion, very little cilantro and only green sauce. The meat was sort of greasy. Same price - $1.25. No horchata.