Cruising downtown Galt yesterday evening, I spotted a lonchera next to the railroad tracks on "A" Street near 4th.
This was Tacos Romero. It has a picnic table for seating under a red umbrella.
Tacos are $1.50 apiece. No carnitas, but it does offer beef birria. I decided on carne adobada (marinated pork) and cabeza (beef cheeks/head).
The pair were generously topped with the respective meats, and a dense scatter of onions and cilantro. Very spicy salsa, and I regretted not ordering a drink. Garnishes include a wedge of lemon, spicy carrots, and a pickled jalapeño pepper. Cabeza was very good; adobada was too dry. I noticed that some patrons had grilled jalapeños, maybe you can ask for them.
This is quite an amiable place. The owner speaks good English and was quick. The friendly customers bid me to join them at the table, "Sientese, sientese." I noticed that others were eating tortas, quesadillas, and burritos in addition to tacos.
This was not a destination for a special trip but certainly a worthwhile stop off Hwy 99. I noticed that the table and umbrellas were being packed up just after 7pm when I was leaving town. So perhaps Tacos Romero closes earlier some days.