There's a grand tradition in Texas (and in California too, I've heard): the taco trailer. It's cheap, it's delicious, it's somewhat of a novelty: you can't go wrong. Anyone who lives or works near a taco trailer will claim that THEIR taco trailer is the BEST in the entire city. The truth is that this is mostly a psychological/emotional matter, and most taco trailers are more or less the same. La Flor in South Austin is certainly great, though more or less...it's a taco trailer (which is to say that it's amazing but really nothing all that special). I tried their breakfast tacos, which are served on flour tortillas (apparently their lunch tacos are served on homemade corn tortillas). They were very good, especially with the truly stellar red salsa. The sausage breakfast taco is curiously filled with Jimmy Dean-style sausage and not chorizo, which doesn't seem very authentic, but it was delicious so I won't complain.

$3.25 for two tacos, which is a decent-sized meal. And it's in the parking lot of a convenience store in case you want to buy a drink. Definitely worth a try if you're feeling hungry and cheap in South Austin.