Having a "great sense of direction" is no match for knowing precisely where you are at all times. The Alpine Navigation and Information System uses input from three different sources to determine present location and track vehicle progress.

It starts with location data from up to eight GPS satellites (received through an onboard antenna) to tell the computer generally where you are. It utilizes vehicle speed information to determine how far you've travelled and a gyro sensor to tell when you've turned-and compares all this with the system's CD-ROM road map database to constantly map your position within a few feet using voice and two style mapping.

Like a personal assistant, it can organize your list of errands into the shortest route, locate the nearest ATM and gas station, or quickly list all the Italian restaurants in the neighborhood. The system then really goes to work, not only calculating the best route but guiding you turn by turn, with ample warning so even in fog, rain or dark of night you'll find your way. You or your spouse may never be lost again.

• Learn how Goren installs the Alpine NVA-N751AS GPS/Visual Route Guidance Navigation System, a difficult to install system that is worth the effort.