Now everybody is going green and to save energy.And now there's a sugar fuel cell that operate by simply pour your coke into it .Chinese designer Daizi Zheng has conjured up a vision for a soft drink-powered cylindrical Nokia of the future that pounds Coca-Colas to stay juiced.The phone uses a bio battery that generates energy from carbohydrates. The only residue of the whole charging process is some water and oxygen. How to charge the phone? just screw off the top, pop the can, and pour. Daizi estimates that that a single can of the stuff could outlast a traditional lithium ion battery by three to four times!