After making several long trips in my 3.8 sedan, I've come to the conclusion that the nav system is retarded. Several times it gave me a route, and at the last minute, we decided to go a different way to see more scenery. This nav almost smoked itself trying to get me to turn around and go back. I also did searches for a rest area, and with a rest area within ten miles, it didn't show it. But, it did show the ones that were BEHIND me as far as 20 miles away. It wouldn't show one that I knew was there until I was 1 mile away. Still, it showed the ones behind me. Some addresses, t won't even accept. These have been on the map for 50 years, and it won't recognize it. It really sends me some wierd ways, also. Like I said, it doesn't like for the route to be changed. It'll spend 20 miles trying to get me to turn around. I guess my Garmin will be used from now on. The dealer wants $400 to upgrade, and I don't think so! I wouldn't invest ten cents in this piece of junk.