Colin Marshall talks with Farley Elliott, senior editor at Eater Los Angeles and author of Los Angeles Street Food: A History from Tamaleros to Taco Trucks, a hybrid history of and guide to everything one can buy and eat on a sidewalk in this city, from taquitos on Olvera Street to illegal backyard Burmese restaurants in the San Gabriel Valley to new-wave fusion food trucks of the likes pioneered by Roy Choi's Korean-Mexican Kogi fleet.