Designer Daizi Zheng has designed an eco friendly phone for Nokia, which runs on Coca-Cola drinks. Yes, its fuel cells generates electricity from carbohydrates(sugar) in the Coke and it can run on any sugary water, not just Coke. Daizi writes: "The concept is using bio battery to replace the traditional battery to create a pollution free environment. Bio battery is an ecologically friendly energy generates electricity from carbohydrates (currently sugar) and utilizes enzymes as the catalyst. By using bio battery as the power source of the phone, it only needs a pack of sugary drink and it generates water and oxygen while the battery dies out. Bio battery has the potential to operate three to four times longer on a single charge than conventional lithium batteries and it could be fully biodegradable. Meanwhile, it brings a whole new perception to batteries and afternoon tea. "