I used one last week. It was in the university truck (yes it was a Dodge ) we took to Wisconson. On the way down it worked awesome, showed us right where to go and we pulled up right in front of the building in Oshkosh. On the way back it was being wierd though, we typed in the schools address it it kept calculating really wierd long routes, we knew how to get back and it kept telling us to do wierd things. After a while it kept showing the route that just ended in the middle of know where, about a 100 miles from the school.

I dunno if it was just a glitch with the address or what. But on the way down we didn't know the exact route and that thing took us exactly to where we needed to be.