Wow, when you sent me the link to this question, I thought I would be able to answer it. This is the toughest one all week. I don't think I have a good answer, except to say that I use the TomTom GPS maps on my iPhone, and that works way better than almost any car-installed GPS I've had.
You also might be able to find out if they have a 2008 or 2007 update that would be better than what you have in there now? It wouldn't be 100T% up-to-date, but if what you have in there now is 2001, then it would probably be better.
-Wayne
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Wayne R. Dempsey, CEO, Pelican Parts Inc., and Author of:
101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman
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