It is not map quest based, or google maps, or yahoo maps. They all have roads that the nav dvd is missing.
I have the 2004 DVD. It is missing many roads in Ontario and Quebec. These are highways that have existed for many years, and are on paper road-maps I have from 15 years ago. One example I found a couple of weeks ago was 15km north of Montreal, on a 6 lane highway going to Tremblant, the nav indicated I was in the middle of no-where. This is not the nav losing the signal, just a poor map. The nav didn't indicate I was on a highway again until I was about 15km from Ottawa-Hull.
Having said that, I find nav very useful for finding your way around big cities that you are not familiar with. I would buy nav again, I just wish the map included all the roads that exist.
After saying that Nav is for Sissies to my sister and wife, I promptly got the lot of us lost west of Toronto two weeks ago.
When I got home I surprised my wife and told her that I had retrofitted her X5 with an aftermarket Nav. To her surprise it was a 5 dollar compass stuck under her mirror (from Canadian Tire). I'll buy a map next trip.
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