oh, and do you really not have a cd player in your car?
Yes I don't. I only have the stock Honda radio, but I do have the cassette deck.
I currently have it playing on my car using one of those tape adapters and it's pretty nice sounding. I guess it's better than getting a HU that can read CD's with MP3's, as I can have more than 600MB's worth of songs.
One con on the review that I forgot to add, since the headphone socket acts as both the headphone socket and the USB data/charger port, you can only do one at a time. meaning, you can't listen while charging. It would be great to charge the thing while it's plugged in the car. I was thinking of maybe making an adapter wherein you can plug in both the headphones and the data cable/charger. But when you plug the USB cable in, it reverts to USB transfer/charging mode. I guess the headphone port's leads changes with the different cables. Not sure.