Urine
Obviously how Green it is depnds on how much you consider the energy required to produce the Cola. Now if it ran on Urine then that would would be green (or at least yellow)!
Smartphones grab most handset headlines these days, but if the latest devices from, respectively, a Chinese designer and Korean manufacturer Pantech are anything to by then there’s still a market for weird and wacky phones. Nokia_coka_phone_01 Daizi Zheng's phone runs on fizzy drinks Designer Daizi Zheng, who claims to be …
My thoughts exactly.
Further to this, the phone could analyze the dna in the urine sample and, when matched with the initial (pre-operational) sample, it could allow the authorized user to make a call etc.
It could replace the ID card as an all-in-one personal piss sample dna biometric thingmy watsit.
If you needed a top in the lav whilst out on the razz the device could also warn you of potentially damaging blood / alcohol levels.
Forget the fizzy drinks, we've done enough serious pissing about as a species, let's go yellow and save the humin wace.