101.   Options on our car, besides the night vision, navigation system,

102.   Optional will be a dash-mounted flip-up GPS navigation system.

103.   Originally, the airport was supposed to have six runways augmented by top-flight navigation systems and spaced in a pinwheel configuration to clear up congestion.

104.   Other companies, including Philips Electronics and Sony Corp., are pumping millions of dollars into digital mapping and GPS-based navigation systems.

105.   Onstar bills itself more as a communications system than a navigation system, as well it should.

106.   Other navigation systems feature a technology called Global Position Satellite.

107.   Optional is a dash-mounted flip-up GPS navigation system, which was included on our test car.

108.   Other Internet navigation systems also feature directories and search engines.

109.   One of the primary goals of Project Nanook was to develop a navigation system for dealing with the anomalies of polar flight.

110.   Predictions that onboard vehicle navigation systems will replace paper road maps in the next few years have been greatly exaggerated.