Umm... Unless I'm crazy, it seems to me the Empeg car player software has no chance of supporting the iPaq's hardware. I'm pretty sure the empeg display, soundcard, mixer, DSP, etc. are all unique to the Empeg. Since we don't have the source to the player binaries, I don't think there's any way to get them to run on something else, regardless of the fact that they're both ARM platforms.

So I don't see why SonicBlue would have any issue with this...