"Roads? Where we're going, we don't need roads." This paracable probably won't be able to power your time machine, but it will provide power to your iPhone, iPad, or iPod. As well as sync your data and stream audio, and that's kinda better than a time machine anyway, right?
This cable was inspired by the flux capacitor from the movie "Back to the Future". There is no technical difference between this cable and all of the others.