dem really work & are they useful?
is there an additional fee required. Will they work outside of the US (say Canada)?
If this is the case then it may make car GPS's near obsolete as many people who have cars generally have cell phones no?
is there an additional fee required. Will they work outside of the US (say Canada)?
If this is the case then it may make car GPS's near obsolete as many people who have cars generally have cell phones no?
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