Street Tacos

Thinking about adding street tacos to the cart. In these parts a street taco is pretty simple. 2 corn tortillas warmed on the griddle, taco meat, onion and cilantro served with a wedge or two of lime. Found a Taqueria where I can by meat pre-cooked for the tacos - beef, pork, chicken, lingua (tongue) at $6.50 a pound. 
 
As it will be precooked it would only take a minute to warm the tortillas on the griddle adding the meat, onions, cilantro and lime. They'd sell at $2.00 each. Most folks I know that buy street tacos NEVER buy just one. 4 - 6 at a time. 
 
I'm considering this in addition to the hot dogs. Any thoughts? I'm thinking it would open up to a larger potential customer base as we've a good sized hispanic community. 
 
~Lonestar