Driving car consumes a lot of energy and leads to fossil fuel depletion, oil price increase and even ecological problems. The posters, Better Formula, Better World, intend to use three math symbols - infinite loop, radical, and empty collection symbol to express a series of concepts - “Drive Less, Live More”, “Drive Less, Save More”, and “Drive Less, Empty More”. In each poster, there is a math formula with some icons and symbols to further bring out the concept of the poster. The posters try to voice healthful, economical and eco-friendly life attitudes.