-- SEVERAL MAKERS OF GOLF carts are adding links--so to speak--to the global positioning system (GPS), the satellites that helped allied tanks navigate the Iraqi desert in the Persian Gulf War and is now helping drivers find their way through unfamiliar streets. Park these carts near a ball, and the GPS screen shows the distance to the flag--accurate to within a few feet. Some golf-course managers say that by removing uncertainty about distance, the carts speed up play and make way for additional golfers.

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