At prices like this, it's the ultimate no-brainer. I can leave one in the car, and leave the other hooked to the home stereo, full-time. Why buy a $200 RioReceiver (which I was contemplating) and run more wires to my stereo when all I have to do is occasionally cart the spare RioCar over to the computer to synchronize it?

[censored], when the Slashdot crowd gets wind of this, they'll sell out immediately.