I just purchased the 2012 GPS update for my 2001 GS430. I did a lot of soul searching about the update and finally purchased the CD. I have a Garmin Nuvi and wished I would have just spent the money on an update unit with life time mapping. My Lexus Nav. will not take me door to door and still you have to go thought the override process to use the system while in dive mode. The passenger cannot make a search or use the Lexus GPS while in in driving mode. The $160.00 mis the lowest price I found beware of knock offs.
The Garmin will take me to door to door and the passenger can do searches for gas or hotels ect. while in driving mode. I do not work for Garmin but I would recommend buying a mobile GPS. You can take it with you if you fly or in another vehicle.