I'm totally agree with you man.You'r 100% good here that there have great stuff.I just purchased the RAVPower RP-UA01 from Amazon ten minutes ago. I read about it in a thread on the front page of this forum about USB.
When I plug the iPad into my USB-supported car stereo, it doesn't charge it, which is why I bought the RAVPower thing. I'm hoping that with it, I'll be able to charge the iPad while it's playing audio through my car speakers!