the street taco is one of the hidden gems of living in southern california. it's fast food, but not like taco bell. it's not a restaurant (although this cart is actually a part of a restaurant), but it serves tasty food. totally mobile, sometimes controversial, and really fantastic.
this cart is situated in front of "el carrizal", a mexican restaurant in pasadena located along orange grove blvd. it opens late in the evening, most nights of the week. i recommend the al pastor tacos, but i bet everything is pretty tasty late at night.
if you want to learn more about the los angeles taco scene, check out this great website.