For those who may be new to Boston and/or find themselves combing the streets for hidden urban treasures, let this is your guide. Boston officially doesn't allow mobile food vendors to operate in the city, but there are still some renegades that roam, and more beyond city limits, in Cambridge. There is nothing quite as good at establishing a sense of place than eating a dirty dog with mustard in the park, or feeling the high noon sunheat off the side of a taco truck, to remind you of where you are, who you're dealing with, and how to "do lunch" informally.
Street food is (usually) affordable, simple, and delicious, if only for the impromptu, almost clairvoyant nature of its existence. You're just starting to feel hungry, and there it is. A mobile outpost that is surprisingly, exactly what you want.
Check out this map of Boston carts from New York Magazine, and the full article here. And if you run into a good one not on this map, let us know so we can go there too!