This is actually an outpost of Sree's restaurant in Squirrel Hill.
Despite the somewhat low-rent appearance of the trailer, the food is actually really good. I would generally recommend the veg lunch, but only because those dishes are delicious. If you need meat they also have pretty good chicken, even though it's all white meat.
My only complaint is their chutney (but that's because I happen to really like mango chutney). And yes, the bread truly sucks (fortunately there's more than enough.food as it is).
Sree did have a a white guy serving up food at some point, but so what? I don't see why you need to be an ethnic to serve ethnic food. In any case, I'm pretty sure he wasn't the cook. The last time I was there it was a nice Indian lady, short enough to fit into the trailer.
All in all, I've found this to be really nice place to get decent South Indian food, not that far off from what you might find on the sub-continent, and not the fancy stuff you end up with in a restaurant in this area.
Check it out.