I don't know if it would sell any better than before assuming it would cost considerably more than a cd based unit, but I haven't seen anything for a car installation that even comes close. All the other HD based units I've seen have inferior screens both in terms of size and information, let alone features. Sure you can plug-in your IPOD or my preferred portable (PJB100 because it can play back 100% gapless) but they just aren't as nice to work with in a car or hooked to a home stereo for that matter.

People I show my EMPEG to are always most suprised to find out that they don't make them anymore.