Portable Tivo for Satellite Radio

Via Gizmodo: A handheld satellite radio receiver. But to me the interesting this is the ability to record one station – up to 5 hours – while listening to another. Just like Tivo.

Only has 5 hours battery life. Which is a lot worse than an iPod.

I also worry how it would work in my RX-8. How do you hook it to the radio?