I was recently in Santa Barbara, and a friend took me to an "authentic" Mexican restaurant. It was part fast food, part grocery store.
I just guessed off the menu and chose a "Super Taco". It was like an open-faced taco in a styrofoam box. It was covered with carne asada, onions, peppers, cilantro, etc. It almost felt like a fajita, but not quite. I've never had anything taste quite like that, and I'm hooked.
Anyone know where I could something similar in San Diego?