On Olympic Blvd. about 4 blocks west of Alameda where all the party/pinata stores are.
Went last wknd. and there are at least 15-20 different outlaw cart set-ups mixed in along the 2 or 3 blocks of party/pintata places. Everything from tortas to squash blossom quesadillas to huaraches to tamales and more. I assume that it only happens on the wknds. for the party/pinata store customers. I was there about noon and it was in full swing. Definitely worth a visit.