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I'm on vacation in the Upper Penninsula of Michigan, and in one section, the vehicle icon was at least 800' from the road while I was driving. I'm not sure if the map was wrong, or the datum, or spheroid, or a momentary gps anomaly (these are VERY rare)...I wasn't in heavy trees, and it had a good line of sight to multiple satellites. There appears to be some 'lock to road' logic, as eventually, when the location icon got closer to the road, it jumped sideways and then 'latched' to the road. I may call BMW when I get home. I actually had two other gps units with me, I guess I should have stopped and tried them to see what they thought of the situation...might have made for an interesting comparison.
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