Rendell

BTW, it would seem that a system that has so many different ROM drives would be able to be more efficient. of course it was 2008.. I get it.. I mean there is a 6 disc changer in the glove compartment, DVDROM in the over head for rear seat passengers, and now I learn about the under seat dedicated for NAV only. my 2008 ford explorer sport trac has one for all. The NAV data is part of a downloadable bin file, that is loadable from a USB drive. Oh yeah, Lexus didn't have this yet.. lol..

chiph9

You'll get full map coverage[0] using either disc. What you won't get is the POI's when you cross into the other region - Just not enough room for them all on one disc.
So just use the one for the region where you feel you need to know where the gas stations are.

Chip H.

[0] Which would be cities and major roads. Back roads are "sorta" on there. Again .. only so much room on the disc. And not every local government uses a GIS and reports their road network to the disc makers.

Tdoll

My GF has a 06 Subaru with Nav, it has a nav dvd under the passenger seat also.

Rendell

Roger that..