Car Audio: CDR(w) OGG playback (w/ MP3)?

There are now dozens of options for in-car dash CD players that offer MP3 playback. I bought my cousin a low end JVC car stereo for Christmas.

But for me… I’m hoping a wizz in here knows if there are any decks that are either upgradeable to- or already support OGG audio playback. Are there? =D Or any other lossLESS audio compression playback?

There’s a spiffy portable device whose name I cannot recall that now has beta firmware that plays MP3 and OGG (20 gig hard drive).

thanks in advance for your helpful advice!