OK, based on the wise advice obtained here I have abandoned all thoughts of aftermarket navigation or back-up camera. I identified2 options for aftermarketiPod integration. The dealer will do it with Audi parts for, sit down, $1,350! I have also found a reputable car stereo shop who will install a NAV-TV product for $850. Details of the NAV-TV product here:
http://www.navtv.com/products_usa_ipod.php.
Anyone have any experience, good or bad, using this product? I'd hate to drop an extra $500 just for peace of mind that product is Audi installed, although I'll hate it worse if the electronics for the car get all f***ed up and I void warranty. Just
how sensitive are the Audi electronics? The car stereo guy, of course, says I have nothing to worry about, just not sure I can trust him due to obvious conflict of interest.