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Street Sweets

Follow them: @streetsweets

This bright blue truck's menu includes muffins, individual cakes, cookies and croissants that can be filled with sweets like Nutella, marshmallow cream or dulche de leche. In order to cut down on emissions, the Street Sweets truck—nicknamed "Chopper" after the owner's dog—runs on biofuels.

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Photo: Oliver Quillia for CNBC.com