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Published daily in Bend, Oregon, by Western Communications, Inc. Copyright 2007.
By Mike Allen / The Bulletin
November 16, 2008
Q: I recently purchased a portable GPS unit. I was cruising on the freeway the other day and noticed that the vehicle speed displayed on the GPS was consistently 4 mph less than the car’s speedometer. Since the GPS uses a calculated time/distance relationship, would it be more accurate....
