This is something that’ll happen more and more – cellphones as brains for physical objects.
I think this photo is kindof neat as well – it’s an unbelievable miracle of technology, powering a cart made out of corrugated cardboard – rubbish basically. And… you know? In five years time, the phone will probably be as worthless as the cardboard – ie: it’ll just be chucked out.
And 5 years after that, it will be regarded as a quaint retro-curio, and 10 years after that, it’s former-owner will wish that he hadn’t ditched it, because now it has value as an historical artifact.
It will be 2030. All bets are off.
(edit)
Although to be honest, I was envisaging something a little more like this