This is in the same strip as the clock tower on Rt 7. This is to the left of it as you look at it. After seeing this spot for a bit I finally stopped and tried for lunch today. Overall, very good. It has a few tables and is mainly poised for dine in service, though I really could only afford take out, timewise. Not knowing Spanish was an inconvenience though an irratible one b/c even I can order "dos tacos carnitas".
The tacos were quickly made, the traditional double corn tortillas. I also got one carne asada as well. The carne asada came with a nice red sauce while the carnitas came with a small dollop of pretty sublime guac.
Good meat, with a nice grilled flavor. Lots of meat on each. Crammed all three into a small to go container with a lime and a whole radish. I also got a very fine horchata. Everything I got was $2 each.
Pretty full menu, definitely had some Salvadoran items, and was probably Salv. by nationality.
There seems to be a few spots that are also worthwhile to check out. I'm only out there occasionally on a client call and otherwise for Babies R' Us. But near this place is a Persian Market that looks like it also serves hot food. THere's an interesting pizza place/deli there, a pho place and a kebab place around the corner. More also, but those have caught my eye the most in the past.
If anyone knows more about any of these places, please post - I'm interested and I know others have looked for Sterling eats.