True.. TomTom Units have two maps. The smaller units (ONE, GO510, ONE XL) get a "USA_and_Canada" map. The units with HDs or larger flash memory (GO 720/GO 910/GO 920) get a "North_America" map. Technically, the maps are the same BUT the NA maps have more detail (such as more lakes/rivers and other landscaping details) than the USA_and_Canada map PLUS they get a lot more POIs and also cover Puerto Rico.

IOW, TomTom scaled down the USA_and_Canada map so that it'll fit in the 1GB units. TomTom uses TeleAtlas mapping for USA/Canada.

Also, their 2006 map (version 660) is up-to-date in some places. The restaurant in the next town over that opened last summer was on my TomTom when I bought it in November. Oddly enough, certain roads that were updated before 2006 did not show. So the updates are spotty.

Mods: EV mod, VVT-i emblem, sport pedals, OEM cargo mat, JDM Prius interior footwell lighting, Sylvania Silverstars 9003ST, DICE iPod kit, OEM all-weather mats, TomTom ONE v2, LED licence plate lights.

And all this lack in coverage is sad since we have paper map atlases with near 100% coverage...ugh...I still keep my 10 buck paper copy. Just don't trust the technology...and I have seen it wrong many at time.

They do have pluses though and I do have to say it is nice to see a map in real time.

With all the development around here in the last 5 to 8 years, I doubt even a current printing of a paper map is anywhere near 100% accurate.

"When you get to the fork in the road, take it." --Yogi Berra

But note that the turn-over time from data collection to paper mapping is quicker than it is to digital maps.

Plus paper maps don't show POIs or phone numbers.

Mods: EV mod, VVT-i emblem, sport pedals, OEM cargo mat, JDM Prius interior footwell lighting, Sylvania Silverstars 9003ST, DICE iPod kit, OEM all-weather mats, TomTom ONE v2, LED licence plate lights.

There is hybrid 7.1 nav disk available on torrent. I am using it for months and works fine, only downside is as it uses loading file from 5.1 disk I still have to press I agree button as in 5.1 On positive note you can unlock it for using while in motion. Just google for "TLF-SOFT-Toyota.Lexus.GPS.Navigation.DVD.V7.1-SHooTERS.iso" without quotes.