It's rare to find a more joyful lunch, dinner, or late-night meal than one eaten near a taco truck in a lot on 16th Street. Our favorites along this strip near 16th and Van Buren Street are La Frontera 1 and 3, and, up the street some, Tacos Y Mariscos El Sinaloa. As its name suggests, Tacos Y Mariscos El Sinaloa specializes in the food of the Mexican state Sinaloa, meaning, for one, mariscos. Seafood comes amid the scraping and clacking of the truck and the music of the boombox, past the ice chests of sodas, and to your table on the pavement. It comes in a goblet. It comes on tostadas. You get a whole plastic sleeve of snappy corn beside your aguachile or ceviche tostadas. They spread a lush fire to your very marrow, a freshness you feel in your soul. The two La Frontera trucks are open deeper into the night. One serves mariscos plus odds and ends, including hamburgers and a plump, glorious, cheese-blizzarded Sonoran dog. The other truck focuses on big ticket meats and offal. Burritos. Vampiros. The tacos are among the best street foods in town. Though commonly available meats like carne asada thrive here, consider looking to others. The lengua is rich and fatty. The buche has a deep animal intensity. Tripas are screaming hot and crackly. Sure, there's salsa you can add, but these tacos are so right you don't need more than onions and chopped herbs. New Normal: The La Frontera food trucks now accept credit cards and called-in takeout orders.