Every been out and about, and realized that you forgot your car charger? And then you realize your phone is about to die (or, maybe you realized both things at the same time). So, what do you do? Ask some store around you, or perhaps the person you're with, if they know what to do? Well, what if you had a small USB hub on you at all times? One that's solar powered, no less? That would just solve all of your problems, now wouldn't it?