Hey there everyone!
Well, I just got back from a short vacation in Destin Florida, and of course the road trip to get there!
2030 Miles total.
The Trip Average Gas Mileage for my 09 AWD SRX / V6 was 17.9mpg I ran cruise at 78mph every chance I had. The back was loaded to the MAX, and there was a "First-Up" Tent on the rails on top of the roof. 4 passengers.
Just as a comparative note, I made this same trip with my 2001 Audi Allroad, also fully loaded... It averaged 23mpg. Huge difference - Cadillac Gas Hog reputation is intact!
No Failures except I learned not to try to close the roof on a bumpy road - Safety sensors will trigger causing it to re-open.
Rear AC was a VERY handy feature in Florida!
Now... why am I posting this in my thread about the NAV unit you wonder!
I used the Caddy Nav to get from St. Louis, to Destin - Actual Drive time on the route the Caddy chose, was 12 hours 10 minutes In Florida it actually routed me through some subdivisions!
I used my Garmin Nuvi 660 to return home - actual drive time was 11 hours 3 minutes. (yes, the Garmin cut an hour off of the drive time!) Garmin took a totally different route then the Caddy did.
Also, I ran both units driving around local Destin and Pensacola. On some of the barrier island locations, the Caddy would announce some crap about no data for the road I was on, but my Garmin knew every restaurant, gas station and Park. The Garmin never failed to find a route to a location, but the Caddy could not find my destination several times.
Needless to say - I am quite Un-Impressed so far with my $2000 Nav unit, when I have to use my $200 Nav to help me out, when the expensive one got me lost!

It was also nice having the Garmin bluetooth for my Cellphone.
Sorry if this sounds like a commercial for Garmin - I am just trying to compare with what I happened to have in my possession at the time.
Good news - while typing this, I received an email from the dealership.. MY new NAV DVD IS IN!
So, I'll load that puppy up tonight, and let you know what comes of that! Figures it would arrive immediately AFTER my road trip!
~Rich