I'd agree with you, if it was just any moving car, with a standard car audio system, however, the 2015 Genesis Ultimate 5.0 with the 17 speaker Lexicon system, would have to arguably be one of the best mobile environments to listen to lossless uncompressed music.
Technically, wouldn't a ripped CD in lossless format be "lossless uncompressed"? Those could play from an iPod. I agree with you however, that higher definition music with higher sampling and playback rates are superior and under the right playback equipment is highly desirable. A listen to well mastered high resolution tracks on the right equipment is seductive.
Interested in the FiiO X3 - let us know if you make the leap.