Wow that sounds dangerous . I have a car mount too but wife won't let it face me! I can get her to drive though.
We have AUX in for radio so that will work nicely (I do it with Pandora).
So when you are traveling in car it's obviously using 3G so I guess that must be good enough huh and WIFI not needed. Intersting.
IMHO it's well worth the money. As it is a small screen, the quality is excellent. I do night shifts and inbetween deliveries I watch shows that I've recorded on my Panasonic Freesat DVR. I can even cue up films on my SkyHD recorder.
Sorry, getting back to the point. If you buy it through the Market and don't like it, I think you can get a refund inside of 24hrs. Could be wrong, but there you go.