Great lobster rolls are hard to come by in Chicago, so it's a surprise that one of the city's best is available on wheels. The Happy Lobster truck serves "happy" rolls, with just mayo, butter and spices, while "angry" adds some feisty heat from giardiniera. The meat is tender and lightly dressed, so the sweetness comes through. Both are available in whole or half sizes, so you can save space for a marvelous whoopie pie brought in from Maine.