A friend of a friend has a friend, and this first friend tipped me off about their friends friends new food cart. I had lunch there with a friend (a different friend) and we got an apple, goat cheese, spinach, mayonaise, and mustard sandwich on whole wheat bread, (mayonaise and goat cheese is a good combination!); smoked tempeh, tomato, lettuce, and mayonaise, again on whole wheat; and a peanut, barley, tomato soup. They're at SW 3rd and Washington, ensconced in a little cluster of carts. They were really good and next time I go maybe I'll try the Satan cheese sandwich.
The amazing thing is that they started putting this cart together one month ago! Another food cart vendor also makes custom carts and they ordered one from him. I'm amazed at their speed. Here I am at month 12.