I could see it being useful. It does have a built-in base map, so you will always know where you are. Base maps will have major state highways and all interstates, and not much more. It might have a few larger lakes. I believe that the base map in the Legend is 8MB.

The down side of the Legend is that it only has 8MB for detailed maps. For everyday use, this would be a serious problem. But for a unit that you throw in a BOB, it would be quite useful for finding the direction to the closest city and stuff like that.

It will NOT help you find local roads so that you can avoid the traffic in the event of an evacuation -- unless you load a detailed map. But 8MB will only hold a less than half of the typical state. The mapping software that goes with the unit will likely cost close to $100.

So I guess the answer depends on what you expect from the GPS. For a primary "every day" unit, I would look for more memory. For a "backup" unit, it might be good enough if you do not need the detailed maps for a large region.
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Darwin was wrong -- I'm still alive