Yes i have bought from food trailers. In fact I am managing one in Austin as well called El Pollo Rey. We specialize in charcoal grilled chicken. With food trailers, you get a variety of cuisines and affordable food compared to dining in a full restaurant.
Yup, when i went into the army, In basic training down at Ft. Knox Ky. they came around 3 or 4 times a day and we got stuff from the gut wagon all the time.
Especially when causally strolling the city, and I don't won't to get out of the sun or go into a restaurant, or while attending street festivals and outside events. It's not restaurant dinning, but it serves it's intended purpose of providing better fast food on the go in most instances.
I get a breakfast burrito from the roach coach at least once every other week. The one I visit parks close by, has good food, let's us see the kitchen which is clean, and is one heckuva nice guy.
Yes, but they weren't the gourmet kind like you see today. See the top opinion as to what they were called when I bought from them. Still the the food was edible and sometimes very good.
Here, they look like these:
Unless of course, you bought from a good one.
The food is pricey and I never bought from them again.