A couple of weeks ago, I noticed a taco cart parked on Bedford between Metropolitan and North 3rd. I was a little bit skeptical, as their signs indicated that they served "American" food (burgers, cheesesteaks) alongside tacos, burritos, and quesadillas.
My skepticism was totally unfounded, because this place is really great! Way, way, way better and more authentic than Endless Summer, which parks over near the Bedford L. And I think a bit cheaper, as well. ($2.50 for tacos, $5 for relatively large quesadillas, I'm not sure about the price of burritos). I stopped by for a quesadilla about an hour ago, and am still giddy about how good it was.
First off, the corn tortillas are made fresh to order -- lumped and pressed and then tossed on the griddle -- and are delicious in their own right, with a sort of nutty corn flavor.
I'm vegetarian, and for my veggie quesadilla I was given two options: shredded zucchini and corn, or mushrooms. I choose a combination of both. The marinated mushrooms were almost certainly made from fresh (not canned) mushrooms, and both they and the zucchini mix were well-seasoned, though they could have been a bit spicier (next time I'll ask for jalapenos as well). A ladle-full of roasted and marinated onions and peppers was added on top: totally awesome. They use shredded, almost mozzarella-like queso fresco in the quesadilla, and then sprinkle some more on before serving. There's a choice of salsas and sour cream -- I got the salsa verde, which was satisfyingly tart and had a bit of heat -- as well as cilantro and chopped onion as additional toppings.
The truck is run by an older hispanic couple who are incredibly friendly. They haven't been there every single day, though they seem to be there occasionally during the week, and on both days of the weekend. Highly recommended!