Taco Cabana is okay for drive-through Mexican food, and vastly superior to Taco Bell, but I've been miffed with them ever since the family lawsuit that put the much better competitor, Taco Casita I think it was (but am not sure), out of business. If they'd improved to be as good, I wouldn't have been so miffed, but as it was, I figured it was just a cheap and dirty way of getting rid of better run with better food competition.
However, that was years ago, and there's only so long I can hold a grudge.
