Getting stuck in traffic sucks, but thanks to a couple of Kiwis you might soon be feeling a little better about yourself while muttering about the brake-happy commuter ahead of you. An invention called Powertread by Justin Robertson and Brett Kemp looks to do something positive with the unending shuffling of queued cars. It's literally a series of tubes filled with water that, when run over, force their contents through a turbine to generate electricity. One car driving over one of the things generates 580 watts of electricity at 36 amps. That's not an awful lot power, but imagine a dozen of the things lined up at a busy off-ramp, run over by thousands
