It's good timing, too. With consumers hanging on to their cash more than ever, a street-food lunch is certainly cheaper than dining in a restaurant, although on closer inspection, not by much. The street food I'm talking about isn't the stale, greasy hot dogs that you might imagine. These people know food, and theirs is gourmet. So gourmet, indeed, that devoted fans take trains and buses to find them, or walk that extra block to snag their fare, just like they would for any popular restaurant.