I went to longo lexus last night, and they had liek 10+ 2002s and only 1 black manual w/ navigation which is at the port. The price they quoted me is 35,000 for nav, and 31xxx without NAV, but its not in stock and they dunno when it will arrive. So my question is the NAV that important? is it worth the extra 4k? I played with it alittle, it just looks cool to me. Help me outthanks.