Hyundai was the second major manufacturer to license SYNC from Microsoft. Systems will start appearing in 2010 models. However, my sales guy did some checking and supposedly found the Lexicon system cannot be 'retrofitted' to SYNC.
Nothing personal, But I'll believe that when I see it. A sound system is a sound system. It doesn't matter what's driving it.
Prima Facia: I could go buy a 09 Ford Flex Limited, with Navigation, that (in my opinion lackluster) Sony sound system, and SYNC. And remove the amp, and speakers, put my own stuff in. And keep the same navi unit, SYNC Computer Unit, and such. And the car would never know the difference.
The only thing you'd need to add is a sound processor, like the JL Clean Sweep, or a Rockford Fosgate 360.2 to clean up the signal from the headunit to your new
aftermarket amp. Otherwise it would sound like bollocks. Worse than the rubbish it sounded like before.
Additionally, car manufacturers, well, manufacture what most consumers want. ATM most consumers want an additional 3.5mm line input, not solely iPod integration, or USB integration. The market is slowly drawing towards ALL 3 - iPod, line in, and usb. However, it will take a while to trickle down. It's by far, cheaper to add a line input to a car, than a USB port, or even iPod.
And to be honest, I seriously doubt, that the majority of the consumers who buy cars on the US market that don't have available HiFi stock stereo systems, such as the Lexicon, or Mark Levinson, etc... would be able to tell the audible difference in a Line Input versus a iPod connected to your car via the dock connector.
edit; I'm not calling anyone out. I was just pointing out some marketing points of view. Please no one take offense.