Can G4 i pod talk to modern car audio? (usb)

I have an older ipod (Generation 4 I think, 20GB, c.2005) and a new car audio system, with a usb socket.

The car audio tells me that it knows that it is an i pod, and charges it, but says it doesn't support it, and it won't play music through the usb. It'll play the music using the aux input (mini din) no problem, but that (of course) doesn't give me the track details or other controls.

I'm sure I'm asking too much 😝 - but is there any way of persuading the old iPod to talk to the SmartAudioCentre? I'm guessing it's a hardware non-compatibility because the audio system tells me it accepts the i pod format - but could it be the version of iTunes on the old iPod? (I think this is iTunes 10, at least that is the version on the PC).

Any thoughts?