Pepsi True is a new green soda from PepsiCo that contains 40% fewer calories than regular Pepsi. Over the past couple of years, there have been some big movements in the United States to cut down on the consumption of sodas filled with high fructose corn syrup, sugar and other artificial sweeteners, and Pepsi's answer comes in the form of a drink that is made with a natural sweetener, stevia, much like Coca-Cola's Life.